Query: user: Can you find some flights for me that leave from London, England. I would prefer American Airlines
assistant: When do you think you will be coming back?
user: I would like to get back on March 12th.
assistant: When would you like to leave and where do you plan to go?
user: I am going to SF with 4 other people. I would like to leave on the 4th.
assistant: An American Airlines flight is available that has an outbound flight at 3:05 pm. The return flight will leave at 7:05 am. The price of the flight is $414
user: This sounds good. It'll be a short trip so I'd like it to be Economy class. Can you help with purchasing tickets for the flight?

Intent: Flights:ReserveRoundtripFlights