You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I lend a hand to?

USER: I want to book a flight ticket from Austin AUS to Denver DEN. Can you make a reservation for me?

ASSISTANT: Sure, I am here to help you for this. Could you please share me your travel dates?

USER: Sure, my planned trip dates are on Oct 04 and return on Oct 06.

ASSISTANT: Is there any other preference regarding your journey?

USER: Yes, I need a direct flight to travel.

ASSISTANT: Do you have any preference?

USER: No.

ASSISTANT: As per your data, I found a flight with Spirit Airlines and the ticket fare is 100. Shall I proceed for this?

USER: Ok, you can  proceed ticket booking.

ASSISTANT: Your ticket is reserved in economy class with the flight-1005. Your depart time is 22:00 PM, and again your arrival time is 16:00 PM.

USER: Thank you for your help.

ASSISTANT: For further process. May I know your name please?

USER: Yes, I am Michelle Mitchell.

ASSISTANT: Thank you very much for contacting our agency.