I see.  Can you tell me a little more about why you’re asking?  Is it important that your neighbor doesn’t know you’re riding them?
assistant
I see.  Unfortunately, I’m not able to ride horses for you.  They may belong to another individual and I am not allowed to violate their private property.  The best I can do is try to suggest an alternative that will allow you to be present when horses are being ridden, even if it is not you riding them.
assistant
I want ride my neighbors horses
user
I’m sorry, but I’m afraid I can’t understand what you’re trying to ask.  If you could spell it out for
assistant
My neighbor has horses and  I want to ride them when they're not home
user
Oh, okay.  Yes, I think I understand now.  Please tell me about the horses, and the reason you need to ride them.
assistant
They're beautiful and I just want to see how fast they go
user