Query: user: Hi, I would like to make a reservation for a round trip please.
assistant: Do you know where you plan to visit?
user: Yes, I will be travelling to Chi-town.
assistant: Where and when do you plan to depart?
user: I will be departing from Seattle later today.
assistant: May I know when will you be returning from your trip?
user: Sure, I will be returning on the March 10th.
assistant: Would you like the American Airlines flight departing at 4 pm and retuning at 2:50 pm which will cost you $267?
user: I see, do you know when will the return flight arrive and whether this is a refundable ticket?
assistant: Unfortunately, this is a non-refundable ticket. The return flight will arrive at 10:03 pm.
user: Are there any alternatives?
assistant: Would you like a Delta Airlines flight departing at 11:50 pm and returning on 5:25 pm? This will cost you $255.
user: This sounds great!
assistant: Would you like me to make a reservation for you?
user: Sure, could you reserve 4 tickets for the Economy class seats?

Intent: Flights:ReserveRoundtripFlights