Query: user: Can you find a one way flight from Philadelphia?
assistant: Sure, when are you leaving?
user: On the 9th of this month.
assistant: Where are you leaving from?
user: From New York City. I need 1 refundable ticket, since my plans may change.
assistant: Sure, I found an American Airlines flight with 0 stops leaving at 7:55 am for $67.
user: Great, help me buy an economy seat on that flight.

Intent: Flights:ReserveOnewayFlight