get_nearest_airport_by_city(location='Rivermist')
get_nearest_airport_by_city(location='Stonebrook')
get_flight_cost(travel_from='RMS', travel_to='LAX', travel_date='2024-08-15', travel_class='business')
set_budget_limit(access_token='ABCDE12345', budget_limit=1500.0)
book_flight(access_token='ABCDE12345', card_id='1432', travel_date='2024-08-15', travel_from='RMS', travel_to='LAX', travel_class='business')
retrieve_invoice(access_token='ABCDE12345', booking_id='3426812')