Query: user: I'm wanting to travel soon. Can you help me find a one way ticket for my flight?
assistant: Sure! When do you want to leave, and where will you be departing from?
user: I'll be departing from Toronto, Ontario. I need to leave on March 11th.
assistant: Sounds good. Where are you going? Do you have any preference on what airline you take?
user: I'm going to San Fran, and I prefer Air Canada if possible.

Intent: Flights:ReserveOnewayFlight