Query: user: Hi, could you help me book some round trip flights please?
assistant: Sure, when do you intend to return?
user: I will likely come back on March 8th.
assistant: Sure, and where will you be departing from and travelling to?
user: I will be travelling from New York City to Chi-town.
assistant: I see, and when do you plan to depart?
user: I will be departing of 5th of March to Portland, OR instead, and this will be for 1 passenger only.
assistant: Sure, there are 2 available flights, one of which is an American Airlines flight departing at 4:45 pm and returning at 7:20 am which costs $323.
user: This sounds great to me!
assistant: Would you like e to purchase the tickets for you?
user: Sure, could you purchase economy class tickets for me?
assistant: Sure, please confirm your purchase of 1 economy class tickets for the American airlines flight from New York to Portland from March 5th at 4:45 pm to March 8th at 7:20 am.
user: That sounds great! May I know if this is a refundable ticket and which airport will I be arriving at?

Intent: Flights:ReserveRoundtripFlights