Query: user: I need flight tickets for a short trip.
assistant: When do you plan to leave?
user: I'll be flying in the 3rd of March.
assistant: What time do you prefer for the return flight?
user: I'd prefer the return flight in the morning 8:15.
assistant: When are you planning to return and do you have any preference for airlines?
user: I'd like to be back on the 13th and I prefer United Airlines.
assistant: Where are you planning to depart from and at what time?
user: I'm hoping to leave around 5:30 pm from New York for my onward trip.
assistant: Where will you be flying to?
user: I'm going to CDMX.
assistant: Please confirm that you need 1 Economy class ticket on United Airlines from New York to Mexico City with the onward flight departing at 5:30 pm the day after tomorrow and the return flight leaving at 8:15 am on March 13th.
user: Just one change please. I prefer Premium Economy.

Intent: Flights:ReserveRoundtripFlights