Query: user: Can you find me a one-way flight? Preferably on Delta Airlines?
assistant: When did you want to leave and from where? Where are you going?
user: I'm leaving on the 1st of March from London to NY.
assistant: I found 1 flight. Delta Airlines leaving at 3:35 pm with 0 stops for $194.
user: That sounds good.
assistant: Shall I buy a ticket?
user: No. I don't want that one.
assistant: Do you need anything else?
user: Can you check round ticket flights for two?
assistant: When are you returning?
user: I'd like to return this Sunday.
assistant: I found 1 flight. It is on Delta Airlines leaving at 3:35 pm. The return flight leaves at 6:20 pm. It is $218 for the ticket.
user: That sounds good.
assistant: Shall I book the tickets?
user: Yes, please do.
assistant: To verify: The flight is for 2 economy tickets from London to New York on Delta Airlines. It departs today at 3:35 pm and returns the day after tomorrow leaving at 6:20 pm.
user: Yes that's correct.
assistant: I have confirmed your tickets.
user: What time does the onward flight arrive?

Intent: Flights:ReserveRoundtripFlights