Query: user: I want to find one-way flights to LA.
assistant: When are you leaving and where from?
user: I'm leaving from Washington on March 3rd.
assistant: There is an American Airlines flight with 0 stops that leaves at 9:45 am. The ticket is $198.
user: Sounds great. I want to buy a one way ticket. There are 2 people but plans may change. I want refundable tickets only.
assistant: Please confirm: 2 economy seats on American Airlines from Washington to Los Angeles on March 3rd.
user: Yes, sounds great.
assistant: Your tickets have been booked.
user: What airport does the flight leave from?

Intent: Flights:ReserveOnewayFlight