Query: user: I am searching for a round trip flight for four people
assistant: Which place are you planning to visit?
user: I am planning to visit to San Fran.
assistant: On which date will you be coming back and when do you plan to leave?
user: I am leaving on the 4th and will be getting back on 6th of March.
assistant: Which place will you be leaving?
user: I am planning to leave from Seattle.
assistant: Alaska airlines is available. Outbound flight leaves at 12 pm and return flight leaves at 2:55 pm. It will cost you $127.
user: Are there other flights available? There are 3 people and I an planning to travel to SD.
assistant: American Airlines is available.The outbound flight leaves at 8:15 am and retuen flight leaves at 4:10 am. The ticket will cost you $206.
user: That sound good to me. Can you please help me in buying the tickets?
assistant: Please confirm the details: American Airlines from Seattle to San Diego on March 4th with return date as March 6th. The onward flight will leave at 8:15 am and and return flight will leaves at 4:10 am. It is an economy class with 3 number of passengers.
user: Yes.That's sound. Is the ticket refundable and does the flight has one stop?

Intent: Flights:ReserveRoundtripFlights