Query: user: I want to fly from Philadelphia, in Economy class, can you help me find flights?
assistant: Where are you flying to?
user: I'm going to Chicago.
assistant: When will you leave?
user: On 6th of March.
assistant: There is an American Airlines flight with 0 stops, leaving at 10:10 am, at a cost of $112.
user: Which airports will it fly between?
assistant: It will travel from PHL International Airport to O'Hare International Airport.
user: That sounds good, can you search for round trip flights four one person, getting back on the 8th.
assistant: I found 1 convenient option, an American Airlines flight departing at 10:10 am, returning at 6:40 pm, at a cost of $128.
user: Where and when will it arrive?
assistant: It will arrive at O'Hare International Airport at 11:21 am.
user: That's good, can you help me buy tickets?
assistant: So I'll book an Economy ticket for 1 passenger from Philadelphia to Chicago with American Airlines, leaving next Wednesday at 10:10 am, returning next Friday at 6:40 pm. Is that okay?
user: Yes, that sounds good.
assistant: The reservation was successful.
user: Thanks a lot.

Intent: Flights:ReserveRoundtripFlights