Query: user: Search round trip flights.
assistant: When are you leaving? Where are you leaving from?
user: I'd like to leave on the 5th of this month from Los Angeles.
assistant: Where are you going and when will you return?
user: To SF. I'd like to return on the 7th of March.
assistant: I've found 3 flights. Alaska Airlines leaves at 5:50 pm and returns at 7:10 pm for $102.
user: Which airport will it arrive at?
assistant: SFO International Airport.
user: Sounds good. I'd like to buy tickets.

Intent: Flights:ReserveRoundtripFlights