Query: user: I need a round trip flight.
assistant: Where're you going?
user: I'm visiting Chicago.
assistant: Where from and when are you leaving, and when do you plan on heading back?
user: I'll be leaving from Vancouver Saturday this week and will head back on March 13th.
assistant: There's a $315 United Airlines flight leaving at 3:15 am and returning at 12:45 pm.
user: Sounds good. I want to buy them.
assistant: Just to make sure, you want 1 Economy United Airlines ticket from Vancouver to Chicago leaving March 2nd at 3:15 am and heading back on March 13th at 12:45 pm.
user: Works for me.

Intent: Flights:ReserveRoundtripFlights