Query: user: Could you look up round trip flights for my sake? I am departing next Wednesday from Vancouver, and I want Delta Airlines.
assistant: When will you return, and what place do you intend to visit?
user: I'd like to return on the 10th, and I intend to go to NY.
assistant: There is a ticket costing $311 for a Delta Airlines flight departing at 2:50 am, with a return flight that departs at 6 am.
user: Is there zero stops on the flight? What time does the onward flight come?
assistant: There is 1 stop, and the onward flight will come at 2:24 pm.
user: That sounds perfect for me. Could you assist me in purchasing flight tickets?

Intent: Flights:ReserveRoundtripFlights