Query: user: I want to go to London, England. Can you find me a flight?
assistant: What date are you coming back?
user: March 14th will be my due date.
assistant: Where and when are you leaving?
user: I want to leave on March 5th out of Philadelphia.
assistant: I found an American Airlines flight that leaves at 4:45 pm and the return flight leaves at 2:05 pm. The cost is $322.
user: Can you find something else?
assistant: I found a Delta Airlines flight that leaves at 2:20 pm and the return flight departs at 8 am. It costs $368.
user: Can you find something else for three people?
assistant: I found a United Airlines flight that departs at 11:30 am and the return flight departs at 0:25 am. It costs $301 per ticket.
user: That sounds great. Can you find me Economy tickets for my short trip?
assistant: Your flight is out of Philadelphia to London on United Airlines on Economy seating for 3 people. It leaves next Tuesday at 11:30 am. and the return flight leaves at 0:25 am on March 14th. Is that right?
user: Yes, that is right. What airport does the return flight depart from?

Intent: Flights:ReserveRoundtripFlights