Query: user: I need a round trip flight to LAX on Delta Airlines.
assistant: Where will the trip begin? When will you return?
user: The trip starts in Vancouver, BC with a return date preference of the 11th.
assistant: What day are you leaving?
user: I'm going to Washington the 5th of March preferably traveling Economy class.
assistant: Delta Airlines has 1 flight for $348. It is scheduled to leave 12:20 pm with the return flight scheduled to leave at 10 am.
user: That's perfect.
assistant: I can get the tickets for you.
user: Thanks, I would like that.

Intent: Flights:ReserveRoundtripFlights