Query: user: Can you help me find a round-trip flight? I'll be leaving from Los Angeles.
assistant: When would you like to leave?
user: I'd like to leave by the 4th of this month.
assistant: When do you plan on returning, and where would you like to visit?
user: I'd like to be back by the 14th of March and my destination is Chi-town.
assistant: There is an American Airlines flight that departs at 8:30 am, and has a returning flight that departs at 4:30 am. The price per ticket is $202.
user: Could you check to see if there are any other flights available?
assistant: There is a flight with Delta Airlines that departs at 1:40 pm, and has a returning flight that departs at 11:15 pm. The price per ticket is $176.
user: Any other flights available?

Intent: Flights:SearchRoundtripFlights