
You are an autonomous intelligent agent tasked with navigating a web browser. You will be given web-based tasks. These tasks will be accomplished through the use of specific actions you can issue.

Here's the information you'll have:
The user's objective: This is the task you're trying to complete.
The current web page's accessibility tree: This is a simplified representation of the webpage, providing key information.
The current web page's URL: This is the page you're currently navigating.
The open tabs: These are the tabs you have open.
The previous action history: This is the sequence of actions you have performed. It may be helpful to track your progress.

The actions you can perform fall into several categories:

Page Operation Actions:
`click [id]`: This action clicks on an element with a specific id on the webpage.
`type [id] [content] [press_enter_after=0|1]`: Use this to type the content into the field with id. By default, the "Enter" key is pressed after typing unless press_enter_after is set to 0.
`hover [id]`: Hover over an element with id.
`press [key_comb]`:  Simulates the pressing of a key combination on the keyboard (e.g., Ctrl+v).
`scroll [direction=down|up]`: Scroll the page up or down.

Tab Management Actions:
`new_tab`: Open a new, empty browser tab.
`tab_focus [tab_index]`: Switch the browser's focus to a specific tab using its index.
`close_tab`: Close the currently active tab.

URL Navigation Actions:
`goto [url]`: Navigate to a specific URL.
`go_back`: Navigate to the previously viewed page.
`go_forward`: Navigate to the next page (if a previous 'go_back' action was performed).

Completion Action:
`stop [answer]`: Issue this action when you believe the task is complete. If the objective is to find a text-based answer, provide the answer in the bracket. If you believe the task is impossible to complete, provide the answer as "N/A" in the bracket.

Homepage:
If you want to visit other websites, check out the homepage at http://homepage.com. It has a list of websites you can visit.
http://homepage.com/password.html lists all the account name and password for the websites. You can use them to log in to the websites.

To be successful, it is very important to follow the following rules:
1. You should only issue an action that is valid given the current observation
2. You should only issue one action at a time.
3. You should follow the examples to reason step by step and then issue the next action.
4. Generate the action in the correct format. 
5. Issue stop action when you think you have achieved the objective. Don't generate anything after stop.

OBSERVATION: 	[39891] heading 'Welcome to United.com'
	[39915] button ' English - United States$'
	[39941] button 'Hi, James0 miles'
	[39962] status '' live: polite atomic: True relevant: additions text
	[39965] button 'Menu'
		[39975] tab 'BOOK' selected: False
		[39978] tab 'MY TRIPS' selected: False
		[39981] tab 'TRAVEL INFO' selected: False
		[39984] tab 'MILEAGEPLUS PROGRAM' selected: False
		[39987] tab 'DEALS' selected: False
	[39990] dialog '' modal: False
		[40028] status '' live: polite atomic: True relevant: additions text
		[40031] tablist '' multiselectable: False orientation: horizontal
			[40032] tab 'Book' selected: False
				[40035] heading 'Book'
			[40038] tab 'Flight status' selected: False
				[38732] heading 'Flight status'
			[40043] tab 'Check-in' selected: False
				[40046] heading 'Check-in'
			[40049] tab 'My trips' selected: False
				[40052] heading 'My trips'
			[40068] tablist '' multiselectable: False orientation: horizontal
				[40069] tab 'Flight' selected: False
					[40070] heading 'Flight'
				[40073] tab 'Hotel' selected: False
					[40074] heading 'Hotel'
				[40077] tab 'Car' selected: False
					[40078] heading 'Car'
				[40081] tab 'Packages' selected: False
					[40082] heading 'Packages'
					[40098] radio 'Roundtrip' checked: false
					[40104] radio 'One-way' checked: false
				[40108] checkbox '' checked: false
				[40115] checkbox '' checked: false
				[40129] combobox 'From*' hasPopup: listbox required: False
				[40136] combobox 'To*' hasPopup: listbox required: False
				[40155] textbox 'Depart' required: False
				[40163] textbox 'Return' required: False
				[40176] button '1 Adult'
				[40178] dialog '' modal: False
					[40186] button '-'
					[40188] textbox '' required: False
					[40189] button '+'
					[40196] button '-'
					[40198] textbox '' required: False
					[40199] button '+'
					[40206] button '-'
					[40208] textbox '' required: False
					[40209] button '+'
					[40216] button '-'
					[40218] textbox '' required: False
					[40219] button '+'
					[40227] button '-'
					[40229] textbox '' required: False
					[40230] button '+'
					[40237] button '-'
					[40239] textbox '' required: False
					[40240] button '+'
					[40247] button '-'
					[40249] textbox '' required: False
					[40250] button '+'
					[40257] button '-'
					[40259] textbox '' required: False
					[40260] button '+'
					[40264] link 'Travel with a pet'
					[40268] button 'Clear all'
					[40270] button 'Close Panel'
				[40278] combobox '' hasPopup: listbox required: False
				[40299] button 'Advanced search'
				[40314] button 'Find flights'
				[40317] button ' Find your travel credits'
				[40350] link 'Showing you the world, working to reduce our impact on it.'
					[40351] heading 'Showing you the world, working to reduce our impact on it.'
				[40353] link 'See how'
		[40377] link 'Advertisement by United: Advertisement: Offers up to 80,000 bonus miles with a United MileagePlus Card.'
		[40385] heading 'Pick up where you left off'
			[38740] heading 'New York/Newark to Toronto'
			[40413] button 'Continue booking'
		[40427] heading 'Explore destinations'
		[40437] combobox 'Flying from' hasPopup: listbox required: False
		[40446] combobox '' hasPopup: menu expanded: False
			[40447] option 'Roundtrip' selected: True
			[40449] option 'One Way' selected: False
		[40459] button 'Flexible dates Use the arrow keys to navigate between days and weeks. Use page up, page down to move between months and years. Press enter to select the date, and escape to close the calendar.'
		[40477] textbox '' required: False
		[40483] button 'Search'
		[40487] link 'Refine search'
		[40497] checkbox 'Book with miles' checked: false
		[40506] checkbox 'Non-stop' checked: false
		[40513] button 'Travel interests'
			[40527] checkbox 'United airports' checked: false
			[40536] checkbox "Where I've been" checked: false
		[40543] link 'Reset filters'
				[40556] button 'List of search results'
					[40559] heading 'List of search results'
				[40567] button ' Save to favorites '
					[38751] image ' Save to favorites '
				[40571] link 'Los Angeles, CA, US (LAX) Fri, Apr 28 - Mon, May 1 from $148 '
				[40581] button ' Save to favorites '
					[38752] image ' Save to favorites '
				[40585] link 'San Francisco, CA, US (SFO) Tue, Apr 18 - Sat, Apr 22 from $148 '
				[40595] button ' Save to favorites '
					[38753] image ' Save to favorites '
				[40599] link 'Denver, CO, US (DEN) Fri, Apr 28 - Sun, Apr 30 from $158 '
				[40609] button ' Save to favorites '
					[38754] image ' Save to favorites '
				[40613] link 'Las Vegas, NV, US (LAS) Sat, Apr 29 - Tue, May 2 from $177 '
				[40623] button ' Save to favorites '
					[38755] image ' Save to favorites '
				[40627] link 'San Diego, CA, US (SAN) Sat, Apr 29 - Tue, May 2 from $177 '
				[40637] button ' Save to favorites '
					[38756] image ' Save to favorites '
				[40641] link 'Chicago, IL, US (ORD) Fri, Apr 28 - Sun, Apr 30 from $198 '
				[40651] button ' Save to favorites '
					[38757] image ' Save to favorites '
				[40655] link 'Dallas/Fort Worth, TX, US (DFW) Sat, Apr 29 - Tue, May 2 from $217 '
				[40665] button ' Save to favorites '
					[38758] image ' Save to favorites '
				[40669] link 'Seattle, WA, US (SEA) Wed, Apr 19 - Mon, Apr 24 from $217 '
				[40679] button ' Save to favorites '
					[40680] image ' Save to favorites '
				[40684] link 'Tampa, FL, US (TPA) Fri, Apr 28 - Tue, May 2 from $217 '
				[40695] button ' Save to favorites '
					[40696] image ' Save to favorites '
				[40700] link 'Atlanta, GA, US (ATL) Sat, Apr 22 - Tue, Apr 25 from $222 '
				[40711] button ' Save to favorites '
					[40712] image ' Save to favorites '
				[40716] link 'Orlando, FL, US (MCO) Sat, Apr 22 - Sat, Apr 29 from $227 '
				[40727] button ' Save to favorites '
					[40728] image ' Save to favorites '
				[40732] link 'New Orleans, LA, US (MSY) Fri, Apr 21 - Mon, Apr 24 from $245 '
				[40743] button ' Save to favorites '
					[40744] image ' Save to favorites '
				[40748] link 'Miami, FL, US (MIA) Tue, Apr 25 - Tue, May 2 from $247 '
				[40758] button ' Save to favorites '
					[40759] image ' Save to favorites '
				[40763] link 'Fort Lauderdale, FL, US (FLL) Wed, May 3 - Wed, May 10 from $256 '
				[40774] button ' Save to favorites '
					[40775] image ' Save to favorites '
				[40779] link 'Toronto, ON, CA (YYZ) Sat, Apr 8 - Tue, Apr 11 from $270 '
				[40790] button ' Save to favorites '
					[40791] image ' Save to favorites '
				[40795] link 'Boston, MA, US (BOS) Mon, May 1 - Wed, May 3 from $317 '
				[40806] button ' Save to favorites '
					[40807] image ' Save to favorites '
				[40811] link 'Cancun, MX (CUN) Sun, Apr 30 - Tue, May 2 from $486 '
				[40822] button ' Save to favorites '
					[40823] image ' Save to favorites '
				[40827] link 'San Jose, CA, US (SJC) Tue, May 2 - Thu, May 4 from $875 '
				[40839] button "Where I've been"
					[40842] heading "Where I've been"
				[40847] heading 'No trips yet'
		[40854] button 'Keyboard shortcuts'
		[41917] button 'Rotate map clockwise'
		[41922] button 'Rotate map counterclockwise'
		[41927] button 'Tilt map'
		[39125] button 'Zoom in'
		[39127] button 'Zoom out'
		[39128] button 'Toggle fullscreen view'
		[38695] image 'Google'
		[39136] button 'Keyboard shortcuts'
		[41949] button 'Map Data'
		[41956] button '500 km Click to toggle between metric and imperial units'
		[39148] heading 'Destinations for you'
		[39156] link 'Book now'
		[39163] link 'Book now'
		[42014] link 'Book now'
		[42030] link 'Book now'
		[42044] heading 'Trip planning made easier'
		[42055] heading 'COVID-19 requirements'
		[42071] heading 'Travel-Ready Center'
		[42087] heading 'Using travel credits'
		[42102] heading 'What to expect when you fly'
		[39172] image 'United CleanPlus | Clorox '
		[42118] heading 'Keeping you safe'
		[42134] heading 'Changing the way you travel'
		[42139] heading 'Touchless check-in'
		[42151] heading 'Our award-winning app'
		[42174] link 'Advertisement by United: Get more with Avis and Budget. Save up to 35% off base rates and earn up to 1,250 miles per rental. Plus, rent bu 04/15 to earn up to 1,000 more miles.'
		[42180] link 'Advertisement by United: United rewards cards. Offers up to 80,000 bonus miles.'
		[42186] link 'Advertisement by United: Soar above the rest. Earn 2x miles on IHG hotels and resorts stays. Offer ends 4/30.'
		[42198] heading 'Popular topics'
		[42202] combobox 'Search United' hasPopup: listbox required: False
		[42204] button 'Search'
		[42259] tablist '' multiselectable: False orientation: horizontal
			[42260] tab 'About United' selected: False
				[42261] heading 'About United'
			[42263] tab 'Products and services' selected: False
				[42264] heading 'Products and services'
			[42266] tab 'Popular destinations' selected: False
				[42267] heading 'Popular destinations'
			[42278] heading 'Corporate information'
			[42323] heading 'Media and partners'
			[42352] heading 'Business services'
		[42523] button ' English - United States$'
		[42536] link 'Espaol'
		[42587] button ' Search for a topic'
		[42591] heading 'Stay Connected '
		[42637] image 'United is a proud member of Star Alliance'
		[42640] link 'CoBrowse'
		[42660] textbox '' required: False
		[42662] button 'Start CoBrowse'
	[42671] dialog '' modal: False
		[42675] heading 'Search'
		[42680] link 'Backto content outside of dialog'
		[42687] button 'Close dialog'
	[42706] dialog '' modal: False
		[42710] heading 'Add to favorites'
		[42724] link 'Backto content outside of dialog'
		[42731] button 'Close dialog'
	[42743] dialog '' modal: False
		[42747] heading 'Add to favorites'
		[42761] link 'Backto content outside of dialog'
		[42768] button 'Close dialog'
	[39165] button 'Site Feedback'
URL: None
OBJECTIVE: Find a round trip from Phoenix to Miami with maximum budget of $2000.
 PREVIOUS ACTION HISTORY: type [125] [Phoenix] where [125] is 'Flying from' hasPopup: listbox required: False->click [9964] where [9964] is 'Phoenix, AZ, US (PHX)'->click [21305] where [21305] is 'Search'->click [29134] where [29134] is 'List of search results'

[Action] click [40748]