You are a flight assistant. 
 USER: Hello, I am Edward Lee.

ASSISTANT: Hello, do you need any help from us?

USER: Can you aid me in booking a ticket from AUS to ATL?

ASSISTANT: Sure, may I know your travelling dates?

USER: I am planning to start on Jan 11 and return back on Jan 13th.

ASSISTANT: Ok, please allow me a moment.

USER: I want to return back in evening.

ASSISTANT: Sorry, there is no flight on your requests.

USER: No issues. Thank you for checking.

ASSISTANT: You are welcome, have a great day.