Query: user: I want you to find me a round trip flight.
assistant: From where will you be leaving from, and where you want to arrive?
user: I will be flying from Los Angeles, to go to Vancouver.
assistant: When do you want to leave for your trip, and when will you be returning?
user: I want to leave on 5th of March, and I will return on 11th of March.
assistant: There are 2 flights which match what you want. One of the flights is with American Airlines, which has an onward flight departing at 3:05 pm, and when it returns it flies at 11 pm. The ticket of this flight costs $193.
user: Can you tell me when the return flight arrive, and at which airport the flight arrives at?
assistant: The returning time of the flight is 2:04 am. The destination of the flight is YVR International Airport.
user: This flight seems nice to me. Is it possible for you to buy me tickets for this flight?
assistant: Can you confirm that you want to buy Economy flight ticket for 1 person, for the American Airlines flight which leaves from Los Angeles on March 5th at 3:05 pm, to go to Vancouver, and returns on March 11th at 11 pm?
user: This suits me well.

Intent: Flights:ReserveRoundtripFlights