Query: user: Could you assist me in finding a one-way flight for my upcoming trip?
assistant: Where do you plan to visit?
user: I plan to visit Sydney, Australia and I will be departing from Portland on March 11th.
assistant: There are 4 flights based on your requirements, one of which is an Alaska Airlines flight which leaves at 10:10 am with 1 intermediary stop. The price of the flight ticket is $323.
user: At which airport does the flight arrive?
assistant: The flight will arrive at Kingsford Smith International Airport.
user: Are there any other available flights for 3 passengers?
assistant: Alternatively, there is an American Airlines flight which departs at 7:20 am with 1 intermediary stop costing $328.
user: What time does the onward flight arrive and at which airport does the flight arrive at?
assistant: The onward flight arrives at 9:26 am at Kingsford Smith International Airport.
user: That sounds good!
assistant: Would you like to purchase the flight tickets?
user: Yes, could you help me to get Economy class flight tickets?
assistant: Please confirm your purchase of Economy class flight tickets for 3 passengers on the American Airlines flight departing from Portland and arriving at Sydney. The flight will depart on March 11th.
user: That sounds good! Is the ticket refundable and at which airport does the flight depart from?
assistant: Your reservation has been made. Unfortunately, the ticket is non-refundable. The flight departs from PDX International Airport.
user: Thank you, that's all the help I need.

Intent: Flights:ReserveOnewayFlight