Query: user: Could you help me look for one-wa flights?
assistant: Where are you leaving from and where were you planning to go?
user: I'd like to travel from LA to Portland, OR.
assistant: When were you planning on leaving?
user: I'd like to leave on the 12th of this month.
assistant: I found 4 flights for you. There is an Alaska Airlines outbound flight with 0 stops leaving at 7:25 am with a price of $129.
user: That flight will work for me. Could you help me buy a one-way ticket?
assistant: Please confirm you're booking an Alaska Airlines flight for 1 leaving from Los Angeles to Portland on March 12th in Economy class.
user: Yes, that is correct. Which airport will the flight leave from and will the ticket be refundable?

Intent: Flights:ReserveOnewayFlight