Query: user: Please help me find one-way flights.
assistant: Where are you leaving from?
user: I'm in Toronto, Ontario.
assistant: When will you leave? What's the destination?
user: I want to leave next Friday and fly to San Fran. I prefer economy.
assistant: I have 4 possible flights for you. How about an Air Canada flight? It leaves at 1:25 pm and has 1 stop. The cost is $305.
user: Sounds good.
assistant: Do you want to buy tickets now?
user: Yes, please get me a ticket.

Intent: Flights:ReserveOnewayFlight