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

User requests (one per turn):
user: How much would a flight from SF to LA even cost? It's probably cheap. That's it, let me just do it. I need to arrange a business class flight for Robert Trenton from San Francisco to Los Angeles on November 25th 2024. The reservation should be made using his travel card with id card_3487 and access code 1293. Following the booking, I have to ensure an invoice is issued to verify the charges.
user: Robert Trenton wants to convey his satisfaction with his recent flight on Twitter. I need to compose a tweet saying 'Loved my flight journey!' accompanied by the hashtag #TravelDiaries. Afterward, the post should be retweeted from his travel account to maximize visibility among his followers.
user: If you need to log in, here's my username 'john' and password 'john1234'. 

Expected function call sequence:
TravelAPI.get_flight_cost
TravelAPI.book_flight
TravelAPI.retrieve_invoice
TwitterAPI.post_tweet
TwitterAPI.retweet