Query: user: I will be visiting a friend and I need to find a round trip flight. Find something to San Fran on today. Make the return flight on the 13th of March.
assistant: From where will you leave?
user: Look for something in Vancouver, BC.
assistant: There is a Delta Airlines flight. The departure takes off at 5:05 pm and the returning flight takes off at 5:45 pm. It has a price of $131.
user: That sounds great. Can you book a ticket?

Intent: Flights:ReserveRoundtripFlights