Query: user: Search for flights departing Mexico City please.
assistant: When do you plan to depart and what is your anticipated return date?
user: I have to leave next Tuesday and plan on returning on the 10th. I will 4 seats and I would like to find a flight with American Airlines if possible.
assistant: Do you have a destination in mind?
user: We are going to go to Chi-town.
assistant: American Airlines is offering a flight for $315 per ticket that will take off at 2:35 am with a return flight scheduled for 12:30 pm.
user: What airport will I leave from?

Intent: Flights:SearchRoundtripFlights