Query: user: Can you find me some round trip flights on the 1st of March?
assistant: Sure, what date do you return?
user: I'm coming back on the 10th of March.
assistant: Where will you be going?
user: Vegas, baby! Sorry, it's my first time going, I'm excited.
assistant: Great! Where are you leaving from?
user: I'm leaving from Chicago, can you get 4 tickets?
assistant: I've got 2 options here, one is with American Airlines at 4:30 am, the return flight leaves at 10:55 am, for $259.
user: Where does it leave from? Can I get a refund?
assistant: This is not refundable, and leaves from O'Hare International Airport.
user: Great, sounds good.

Intent: Flights:SearchRoundtripFlights