Query: user: Can you help me find a one way flight?
assistant: Sure. Where are you going and when do you want to leave?
user: I want to leave the 11th of March. I just need one ticket to Toronto.
assistant: Where would you like to leave from?
user: Seattle.
assistant: I found 5 flights for you. The best price is $256 with Alaska Airlines. The flight leaves at 8:25 am and has 1 stop.
user: Is it refundable?
assistant: No, the ticket is not refundable.
user: The flight departs from which airport in Seattle? And arrives to which airport?

Intent: Flights:SearchOnewayFlight