Multi-turn user requests:
user: Check the verification of Eleanor Smith's personal details, including her date of birth, March 15, 1985, and her passport number US123456789.
user: Identify the closest airport to Crescent Hollow.
user: Arrange a flight reservation to the nearest airport in Hong Kong, with the departure date set for December 15, 2024, in economy class at a cost of $850, using the credit card labeled 'primary' and access token 'abc123xyz' on file, ensuring all personal information is verified and protected. Make sure the budget limit is 1000.
user: Locate and provide the travel invoice that has gone missing for review of the transaction details.
user: Contact customer support urgently to report and resolve a discrepancy encountered with the booking, providing all necessary details.

Involved API classes: TicketAPI
TravelAPI

Initial environment state:
TravelAPI: credit_card_list: primary: card_number: 4111111111111111
expiry_date: 12/25
cardholder_name: Eleanor Smith
balance: 5000
access_token: abc123xyz
token_type: Bearer
token_expires_in: 3600
token_scope: read write
user_first_name: Eleanor
user_last_name: Smith
budget_limit: 10000

Ground-truth function call path:
TravelAPI.verify_traveler_information
TravelAPI.get_nearest_airport_by_city
TravelAPI.book_flight
TravelAPI.retrieve_invoice
TravelAPI.contact_customer_support
TravelAPI.cancel_booking
TicketAPI.create_ticket

Functions held out until the model asks (by turn index):
1: verify_traveler_information