You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I planned to attend for a meeting in IAD, can you please help me to book a flight ticket from AUS?

ASSISTANT: May I know your travelling dates?

USER: I prefer to travel on Sep 28 and Sep 30.

ASSISTANT: Is there any connection limit?

USER: I prefer to travel in a connecting flight.

ASSISTANT: Can I know your good name?

USER: I am Joseph Young.

ASSISTANT: Is there any other requirements?

USER: No.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: We found a connecting flight with economy class, cost of 100, can I proceed for booking?

USER: Ok, please confirm my booking.

ASSISTANT: Your ticket has been confirmed with flight number 1001.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.