Query: user: I'd like to find round trip flights.
assistant: When are you leaving and where from? When would you like to return?
user: I'd like to leave this Sunday from Chi-town and will be returning on the 13th.
assistant: What is your destination?
user: I'm going to Seattle, WA.
assistant: I have found an American Airlines flight leaving at 7:50 am and returning at 4 pm. The price of a ticket on this plane is $258.
user: When does the return flight arrive?
assistant: It arrives at 10:30 pm.
user: Okay, I like the sound of this flight. I'd like to buy tickets.

Intent: Flights:ReserveRoundtripFlights