Multi-turn user requests:
user: I'm planning a journey from Los Angeles to New York on the morning of April 15th 2024, preferring to fly business class. Arrange this flight using my pre-linked credit card with id 'card_123456789' and access token 'abc123xyz'.
user: With my flight now secured, I need to review the invoice outlining the costs involved. Retrieve that invoice for me, please.
user: There were hiccups during the booking process. Reach out to customer support and detail the challenges I faced.
user: Loggin in as USR001 for messaging. Once you've reached out to them, please brief my colleague Catherine (id='USR003') on the situation using my sender id 'MichaelTpss', message to send be 'Update on flight issue and customer support contact.'.
user: Finally, compile and present all the responses sent following the communications regarding the flight issue.

Involved API classes: MessageAPI
TravelAPI

Initial environment state:
TravelAPI: credit_card_list: card_123456789: card_number: 1234-5678-9876-5432
expiry_date: 12/25
cardholder_name: Michael Thompson
currency: EUR
balance: 5000
booking_record: booking_987654321: flight_number: LA1234
departure: Los Angeles
destination: New York
class: Business
date: 2024-04-15
cost: 1200
access_token: abc123xyz
token_type: Bearer
token_expires_in: 3600
token_scope: read_write
user_first_name: Michael
user_last_name: Thompson
budget_limit: 3000

Ground-truth function call path:
TravelAPI.compute_exchange_rate
TravelAPI.get_flight_cost
TravelAPI.book_flight
TravelAPI.retrieve_invoice
TravelAPI.contact_customer_support
MessageAPI.send_message
MessageAPI.view_messages_received

Functions held out until the model asks (by turn index):
4: send_message