Query: user: Search round trip flights from Atlanta.
assistant: When do you leave and where are you going?
user: I'm going to New York on the 5th of this month.
assistant: When do you want to return?
user: On the 8th of this month.
assistant: I've found 3 flights. There's an American Airlines flight that leaves from Atlanta at 6:25 am and will leave from New York at 11:20 am for $141.
user: That sounds good.
assistant: Shall I book the flight?
user: Yes please. I'd like 4 refundable tickets.

Intent: Flights:ReserveRoundtripFlights