get_flight_cost(travel_from='SFO', travel_to='LAX', travel_date='2024-11-16', travel_class='business')
book_flight(access_token='abc123xyz', card_id='AMEX123456789', travel_date='2024-11-16', travel_from='SFO', travel_to='LAX', travel_class='business')
cancel_booking(access_token='abc123xyz', booking_id='3426812')