Query: user: find me round trip flight
assistant: where are you leaving from?
user: Leaving from Paris
assistant: when are you leaving?
user: on March 2nd
assistant: where are you leaving for?
user: going to Portland, OR
assistant: whats the return date?
user: Return on March 9th
assistant: There is a Delta Airlines leaving at 11:20 am and the returns ta 8 pm and costs $408
user: Is a 0 stop flight?
assistant: no, it has 1 stop
user: ok, book me 3 economy tickets
assistant: Please confirm: Booking 3 economy tickets for a Delta Airlines leaving at 11:20 am on march 2nd from Paris to portland and the return is at 8 pm on march 9th
user: yes, thats right
assistant: Your booking is done
user: what is the departing airport?
assistant: Its Charles De Gaulle International Airport
user: what is the departing airport? is it refundable ticket?

Intent: Flights:ReserveRoundtripFlights