Query: user: I have a trip soon, can you find me some one-way flights?
assistant: Sure. Where are you leaving from?
user: From London.
assistant: Where and when do you plan to go?
user: I want to go to Seattle, WA on March 10th.
assistant: There's an American Airlines flight at 3:05 pm with 1 stop for $350.
user: Is there anything else?
assistant: There's also a $376 Delta Airlines flight at 8 am with 1 stop.
user: That one works. I want to travel soon, could you buy the ticket for me?
assistant: Just to make sure, you want 1 economy ticket on the Delta Airlines light from London to Seattle on March 10th?
user: Yep, which airport does it arrive in?

Intent: Flights:ReserveOnewayFlight