Query: user: I would like to travel to Phoenix, AZ. Would you search available flights for me?
assistant: Where would you like to leave from?
user: I will fly out from Ciudad de Mexico.
assistant: When would you like to leave?
user: I am leaving on the 3rd.
assistant: When would you like to return?
user: I would like to leave San Fran and be home next Friday.
assistant: I found 2 flights for your trip on American Airlines with one leaving at 2:55 pm and returning at 1:20 pm. The price for this flight is $153.
user: Where does the flight leave from?
assistant: The flight departs from Benito Juarez International Airport.
user: I plan to be there for a short time and that flight sounds very good. Will you help me buy tickets?

Intent: Flights:ReserveRoundtripFlights