You are a flight assistant. 
 USER: Hello. I am Kimberly Turner.

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

USER: Could you please book a flight ticket to ATL as I want to attend a pioneer festival?

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: I want to depart on Sept 08 and return back on Sept 10.

ASSISTANT: Ok, may I know your origin location airport code?

USER: My origin airport code is LAX.

ASSISTANT: Sorry, there is no flight on your requested travelling dates.

USER: Not a problem, thank you for the information.

ASSISTANT: You are welcome, have a great day.