Query: user: I'd like you to search round trip flights for me.
assistant: What is your destination and origin?
user: I'm going to be traveling to Chi-town from London, UK.
assistant: What date do you plan on leaving and when will you be coming back?
user: I'm leaving Tuesday next week and I'd like to return on the 12th of March.
assistant: There is an American Airlines flight leaving at 0:10 am with a return flight at 12:30 PM. The ticket price is $422.
user: That flight sounds good can you help me buy 3 economy tickets?
assistant: Sure, please confirm the following details. You'd like to purchase 3 economy tickets for American Airlines from London going to Chicago departing March 5th at 0:10 am with a return flight March 12th at 12:30 pm.
user: Yes thats correct. Are the tickets refundable? Which Airport will the flight be departing from?

Intent: Flights:ReserveRoundtripFlights