Query: user: Are there any round trip flights available? I wish to make a trip.
assistant: Your departure time and station please.
user: Leaving from ATL on the 2nd.
assistant: Where are you going to?
user: I am going to Las Vegas.
assistant: Your return details please.
user: Coming back on 14th of this month.
assistant: You can choose from 2 flights available. One is Southwest Airlines leaving at 12:05 pm and on return leaves at 2:35 pm. $280 will your expense for the travel.
user: How many layovers are there for the flight? What is the time of onward flight?
assistant: You can expect the onward fligt at 4:19 pm with 1 layovers.
user: That will be a right choice. Please buy tickets for me on that.

Intent: Flights:ReserveRoundtripFlights