Query: user: Look up a round trip flight.
assistant: Destination?
user: San Francisco.
assistant: Return date?
user: Leaving San Diego on 4th of March and returning March 9th.
assistant: I found 4 flights. Alaska Airlines leaves 11:10 am and returns 7:10 pm for $140.
user: Where does it arrive? Are there zero stops?
assistant: There is 1 stop and it arrives SFO International Airport.
user: Anything else?
assistant: There's an American Airlines flight for $162 that leaves 9:20 pm and returns 5:30 pm.
user: Ok.

Intent: Flights:SearchRoundtripFlights