You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I need a single connecting flight from Denver DEN. Can you make a reservation for me?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: Ok, my journey dates are on Dec 18 and return on Dec 20.

ASSISTANT: Would you like to travel in a connecting flight or a direct flight?

USER: I have already mentioned.

ASSISTANT: May I know your good name please?

USER: Ok, my name is Daniel Hill.

ASSISTANT: Can you please share your destination airport codes?

USER: Ok, my destination code is Atlanta ATL.

ASSISTANT: Do you have any particular time for departing and returning?

USER: No.

ASSISTANT: We found American airline with economy class and flight number is 1020 with arrival time is 7:00 hours and departure time is 8:00 hours.Shall I proceed for booking?

USER: Ok, you can proceed with the ticket booking.

ASSISTANT: Your ticket is booked.

USER: Thank you for great service.

ASSISTANT: You are welcome.