compute_exchange_rate(base_currency='RMB', target_currency='USD', value=10000.0)
set_budget_limit(access_token='897362', budget_limit=1428.57)
get_flight_cost(travel_from='JFK',travel_to='PEK',travel_date='2024-06-15',travel_class='first')
book_flight(access_token='897362', card_id='card_8283', travel_date='2024-06-15', travel_from='JFK', travel_to='PEK', travel_class='first')
purchase_insurance(access_token='897362', insurance_type='comprehensive', insurance_cost=250.0, booking_id='3426812', card_id='card_8283')
retrieve_invoice(access_token='897362', booking_id='3426812')
message_login(user_id='USR001')
send_message(receiver_id='travel_agent', message='Thank you for your efficient handling of my booking to Beijing. My trip is confirmed for June 15th from JFK to PEK in first class.')
view_messages_sent()