Query: user: I need to find a flight.
assistant: Leaving when and returning when? And where will you be going?
user: Leaving on the 2nd of March going to Phoenix, AZ and returning on the 12th of March. I'd like something on United Airlines and it's for three people.
assistant: Leaving from where please?
user: That will be from Portland.
assistant: I have a United Airlines flight leaving at 9:30 AM and returning at 6:10 PM for $148.
user: Which airport does it fly into and does it have zero stops?
assistant: It flies into Sky Harbor International Airport And it has 0 stops.
user: That sounds good for my short trip. May I book tickets with you?
assistant: Confirming the following, leaving from Portland at 9:30 am, going to Phoenix on United Airlines tomorrow. Returning on March 12th At 6:10 PM. Flying in economy class for 3 passengers.
user: Where does it fly out of and is the ticket refundable?

Intent: Flights:ReserveRoundtripFlights