Query: user: I'd like a one way flight tickets.
assistant: Sure, please provide the following. Where to, what day, and from where?
user: I'll be leaving from Vancouver, BC on the 12th of this month and want to go to Seattle.
assistant: There's a air canada flight that leaves at 4:45 pm with 1 stop for $255
user: Awesome.
assistant: Shall I book the tickets?
user: Yes, book four tickets.
assistant: Please confirm: 4 air canada economy tickets from Vancouver to Seattle on march 12th
user: Perfect, what airport will be arrive at?
assistant: Tickets are confirmed. You're destination is Seattle-Tacoma International Airport.
user: Are they refundable tickets and where airport are we leaving from?

Intent: Flights:ReserveOnewayFlight