Multi-turn user requests:
user: In attempting to log into my travel account using both my established client id 'client_520', secret 'rise_to_sky' and refresh token 'token990125', I seem to be at a bit of an impasse. Assistance with the authentication process would be immensely appreciated.
user: I've recently linked a newly registered credit card with the ID 'card_4455', set to expire in 2024, and it's under my name. Accessing my account to ascertain my current balance is my next goal. Could this information be retrieved using access token 'abc123xyz456' for me?
user: Having reviewed my financial standing, I now need to compute the average amount spent in my last quintet of purchases. Guidance in deriving this mean value would be beneficial.
user: The amounts are 45.99, 78.25, 102.50, 38.75, and 92.10.

Involved API classes: MathAPI
TravelAPI

Initial environment state:
TravelAPI: credit_card_list: card_4455: card_number: 2378 8753 9012 4455
expiry_date: 2024
cardholder_name: Michael Thompson
balance: 1500.75
access_token: abc123xyz456
token_type: Bearer
token_expires_in: 3600
token_scope: read_write
user_first_name: Michael
user_last_name: Thompson
budget_limit: 5000
MathAPI: numbers: 45.99
78.25
102.5
38.75
92.1

Ground-truth function call path:
TravelAPI.authenticate
TravelAPI.register_credit_card
TravelAPI.get_credit_card_balance
MathAPI.mean

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