get_flight_cost(travel_from='RMS', travel_to='JFK', travel_date='2024-12-15', travel_class='first')
book_flight(access_token='secure_access_token_987654321', card_id='card_4526', travel_date='2024-12-15', travel_from='RMS', travel_to='JFK', travel_class='first')
retrieve_invoice(access_token='secure_access_token_987654321', booking_id='3426812')
contact_customer_support(booking_id='3426812', message='No feedback yet on my inquiry regarding my flight arrangements. Please expedite the process.')
cancel_booking(access_token='secure_access_token_987654321', booking_id='3426812')
authenticate_twitter(username='john', password='john1234')
post_tweet(content='Postponing my plans.', tags=['#Travel', '#PlansChanged'], mentions=['@AirlineSupport'])