Query: user: Could you help me find a round trip flight?
assistant: Sure, where are you planning on visiting?
user: I'd like to go to Sydney?
assistant: When do you plan to leave? Also, where do you want to depart from? Also when do you want to come back?
user: Well I need to leave on the 5th. I'll be coming back on the 13th of March. I'm leaving out of SFO and I'm not particular about the airline.
assistant: Well I did actually find 1 flight that sounds perfect for you. It's leaving at 1:25 pm out of United Airlines and the return flight departs at 5:25 am. The ticket costs $220.
user: Which airport does that flight arrive at? And which one is it departing from?
assistant: You'll leave from SFO International Airport and arrive at Kingsford Smith International Airport.
user: Sounds fine to me.
assistant: Should I buy the tickets, then?
user: Yes, perfect, please book those.
assistant: Cool, so you want to fly out of San Francisco on March 5th at 1:25 pm, on an economy flight with United Airlines, and return on March 13th at 5:25 am leaving from Sydney. If that sounds right I'll book 1 ticket for you.
user: Sounds perfect to me.

Intent: Flights:ReserveRoundtripFlights