Query: user: I plan on traveling soon. Can you help me purchase a flight ticket that is one-way? I will need 4 tickets.
assistant: Where did you plan to travel to?
user: I plan on traveling to SD.
assistant: Where will you be departing from and do you have a preferred airline? When is your departure date?
user: I am leaving from LA on March 12th. I prefer to fly Southwest Airlines.

Intent: Flights:ReserveOnewayFlight