You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I am Dennis Davis want to visit CLT, can you book a ticket from AUS?

ASSISTANT: Sure, I will help you with that. Can I have your travel dates please?

USER: Sure, my travelling dates will be 11/06 and 11/08.

ASSISTANT: Thank you for your information. Sorry to say, no flight is available for you.

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us, have a nice day.