Query: user: I plan to take a short flight, can you help me buy tickets?
assistant: Where will you be leaving from?
user: I am leaving San Fran on March 1st. I plan to travel on an Economy flight.
assistant: Are you travelling with a preferred airline such as Air Canada or Air France? When do you plan to return?
user: I prefer to fly with United Airlines and I plan to be back on the 4th of this month.
assistant: How early would you like to fly out? Is there anywhere particular you are planning to visit?
user: I would like to leave early possibly around 08:00. I am traveling to NY so I would prefer to take Delta Airlines.
assistant: When would you like to return?
user: I would like to be on my next flight by half past 6 in the evening.

Intent: Flights:ReserveRoundtripFlights