how to get senior citizen discount on flights United
[{'entity': 'DEPARTMENT', 'value': 'senior citizen', 'span': [11, 25]}, {'entity': 'DISCOUNT', 'value': 'discount', 'span': [26, 34]}, {'entity': 'CORE_PRODUCT_TYPE', 'value': 'flights', 'span': [38, 45]}, {'entity': 'BRAND', 'value': 'United', 'span': [46, 52]}]
how to get senior citizen discount on flights United