Query: user: can you search flights for me? i am travelling to los angeles
assistant: when area you coming back?
user: i want to get back on 11th of march and wish to traveling in economy class
assistant: where will you be leaving from?
user: i ama leaving from philadelphia
assistant: when do you plan to leave?
user: i am leaving on march 6th
assistant: i searched 2 convenient flights for your trip is delta airlines flight. the flight leaves at 10:45 am. the return flight leaves at 1:40 pm the price of the ticket is $282
user: that flight sounds good to me
assistant: should i buy the tickets for it?
user: yes i would like to book the ticket
assistant: the flight is from philadelphia and goes to los angeles, the airlines is delta airlines. departure date is next wednesday the return flight date is march 11th. the onward flight leaves at 10:45 am the return flight at 1:40 pm seating class is economy and number of passengers is 1
user: yes that sounds good.which airport does the flight arrive?

Intent: Flights:ReserveRoundtripFlights