You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Can you help me in booking my flight ticket from AUS to LAX?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: My planned dates of journey are Sept 23 and Sept 25.

ASSISTANT: Do you have any preferences about flight connections?

USER: I prefer connecting flight for this trip.

ASSISTANT: Do you have any preferences about class?

USER: I prefer to return in evening flight for this trip.

ASSISTANT: Please mention your name.

USER: My name is Donald Lee.

ASSISTANT: The American airlines providing an economy class flight with price 100 and the connections 1.The return time is 22:00 hours. Shall I confirm your ticket?

USER: Please book my ticket in this flight.

ASSISTANT: Your ticket is booked. The flight number is 1009.

USER: Thank you for booking my ticket.

ASSISTANT: Welcome, have a great day.