Query: user: Would you look for round trip flights for me?
assistant: Where will you visit and when are you leaving?
user: I will leave the 4th of this month and want to go to Vancouver.
assistant: What airport will you leave from?
user: I will leave from NYC.
assistant: When will you come back?
user: I want to return Friday next week.
assistant: I have 2 flights for your trip. There is a Delta Airlines flight that leaves at 6 am. The return flight departs at 2:50 am and costs $304.
user: Sounds perfect.
assistant: Shall I buy tickets for it?
user: Yes, please do. There is one person in the group.

Intent: Flights:ReserveRoundtripFlights