You are a flight assistant. 
 USER: Hello, I'm Jennifer Adams.

ASSISTANT: Hello, how may I assist you?

USER: I want a flight ticket from DTW to AUS, can you please book a ticket if it is available?

ASSISTANT: Sure, may I know your travelling dates?

USER: I would like to travel on 07/31 and return on 08/02.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry for the inconvenience, there is no flight available for your request.

USER: That's ok. Thank you.

ASSISTANT: Have a great day.