You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: Can you help me in modification of my reservation as my destination location got changed to DFW?

ASSISTANT: When you are willing to travel?

USER: I am willing to travel from Oct 04 to Oct 06.

ASSISTANT:  In which class would you like me to book your flight ticket?

USER: I am comfortable with any of the class.

ASSISTANT: Let me know your connection limit?

USER: I need a single connecting flight.

ASSISTANT:  Can you please provide your take off airport code?

USER: It is AUS.

ASSISTANT: May I know your good name please?

USER: Sure, my name is Anna Scott.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: We found 1011 AA airlines with 0 connection with economy class. Shall I proceed with the booking?

USER: Yes, do proceed with the booking.

ASSISTANT: Your ticket has been reserved with price 200.

USER: Thank you for your kind service.

ASSISTANT: Thank you for choosing us.