Query: user: I'm looking for a roundtrip flight leaving from Vancouver, BC on March 1st.
assistant: What is your destination and your return date?
user: I'll be going to New York and coming back on the 11th of March.
assistant: I have 2 possible flights for you. Delta Airlines has a flight that leaves at 3:20 AM and comes back at 6 am which costs $332.
user: From which airport?

Intent: Flights:SearchRoundtripFlights