Multi-turn user requests:
user: Before I start packing my bags for the upcoming trip, I need to double-check that all my personal information is up to date. Let's go over my full name and passport details to make sure everything's in order before I hit the road. For reference my birthdate is January 1st 1950 and the number on my passport is P followed by 12345678. My first name is Michael and  last name is Thompson
user: Now that my personal details have been sorted, I'm eager to locate the nearest airport to Rivermist. After that, I'd appreciate a price estimate for flying business class from there to GFD on December 15, 2024.
user: Looking at the travel expenses, I've realized the importance of setting a spending cap. Could you help me establish a travel budget of $5000, so I can keep my finances in check using the access token abc123xyz?
user: Armed with my budget, I’m ready to lock in my travel plans. Let’s proceed with booking my flight from RMS to GFD, using my go-to credit card with id 'card1234'. I'd like to get everything in order for the transaction.
user: Finally, to finalize my travel preparations, a neat summary of my booking would be amazing. Could you generate an invoice for this latest purchase? It would be great to review everything before I start packing.

Involved API classes: TravelAPI

Initial environment state:
TravelAPI: credit_card_list: card1234: card_number: 1234-5678-9012-3456
expiry_date: 12/25
cardholder_name: Michael Thompson
balance: 10000
booking_record: booking001: flight_number: LA123
departure: Rivermist
destination: Los Angeles
date: 2024-12-15
class: Business
price: 1500
access_token: abc123xyz
token_type: Bearer
token_expires_in: 3600
token_scope: read_write
user_first_name: Michael
user_last_name: Thompson
budget_limit: 5000

Ground-truth function call path:
TravelAPI.verify_traveler_information
TravelAPI.get_nearest_airport_by_city
TravelAPI.get_flight_cost
TravelAPI.set_budget_limit
TravelAPI.book_flight
TravelAPI.retrieve_invoice

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