Query: user: I need a round trip flight.
assistant: Where would you be leaving from and when would you be returning?
user: I am leaving chicago and I want to return on the 14th of march.
assistant: Where are you heading to and when would you like to leave?
user: I would be traveling to London, UK Monday next week.
assistant: There is a flight on american airlines that leaves at 4:30 am and returns at 2:05 pm. The cost of the ticket is $342.
user: Which airport would it be leaving from?
assistant: From o'hare international airport.
user: I am not sure if I want to go so I need to know if the ticket is refundable?
assistant: I am sorry but the ticket is non-refundable.
user: That would be fine. I want 4 economy tickets.
assistant: You would like economy tickets for 4 on an american airlines flight from chicago to london that leaves on march 4th at 4:30 am and returns on march 14th at 2:05 pm.
user: That would be great.

Intent: Flights:ReserveRoundtripFlights