Query: user: Could you help me find a round trip flight leaving from Los Angeles?
assistant: Where did you plan to visit and when were you planning on leaving?
user: I'm going to Washington and I plan to leave on 1st of March.
assistant: When did you plan to come back?
user: I'd like to return on 4th of March.
assistant: There is an outbound American Airlines flight leaving at 2:10 pm with the return flight leaving at 9:55 pm for $290.
user: That works for me.
assistant: Did you want me to buy tickets for it?
user: Yes, I'd like to book the ticket and I would like to travel in Economy.

Intent: Flights:ReserveRoundtripFlights