Query: user: I need an Economy round trip flight for 3 leaving out of Atlanta.
assistant: When do you plan on leaving and coming back?
user: I'm out of here Wednesday next week and get back on the 14th.
assistant: Where're you going?
user: I'm headed to Vancouver.
assistant: There're 2 flights that are decent options. Delta Airlines has a 3:20 pm outbound and 2:50 am return for $248.
user: Cool, let's book it.

Intent: Flights:ReserveRoundtripFlights