Multi-turn tool-use scenario.
Tools involved: TicketAPI
TravelAPI

User requests (one per turn):
user: I'm planning to fly from San Francisco to Los Angeles on October 15, 2024. Could you assist in securing a first-class seat using my travel card with id 'travel_card_12345'? Everything you need—access token (abc123xyz456), traveler details—are at the ready. Just make sure that I can afford it because I only have 6000 dollars to spend for this flight.
user: Once my flight is booked, I'd appreciate an itemized invoice reflecting every cost involved. I must ensure the expenses align with my expectations this time around.
user: I seem to have hit a hurdle with my reservation—please contact customer support immediately to resolve a last-minute complication.
user: login the ticket with my username 'mthompson' and password as 'securePass123'. Kindly create a 'Urgent Flight Issue'. This matter demands high priority of 4. Don't put anything for ticket description
user: Could you enhance the ticket's details by updating its status to 'Urgent' and its priority to the highest level to reflect its critical importance?

Expected function call sequence:
TravelAPI.get_flight_cost
TravelAPI.book_flight
TravelAPI.cancel_booking
TravelAPI.retrieve_invoice
TravelAPI.contact_customer_support
TicketAPI.create_ticket
TicketAPI.edit_ticket