book_flight(access_token='2278-9812-3456-4567', card_id='card_6789', travel_date='2024-11-10', travel_from='RMS', travel_to='LAX', travel_class='business')
retrieve_invoice(access_token='2278-9812-3456-4567', booking_id='3426812')
contact_customer_support(booking_id='3426812', message='Inquiry regarding luggage restrictions for my flight')