You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you at this moment?

USER: I am Mark Parker. As I am narrator, I would like to go for a storytelling festival at Atlanta ATL.

ASSISTANT: Sure, I will help you. Please provide your preferable travelling dates.

USER: My travelling dates are 03/01 to 03/03.

ASSISTANT: Noted. Please provide your source airport code.

USER: My source airport code is Los Angeles LAX.

ASSISTANT: Can I have a moment please? I will check the availability.

USER: Sure.

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

USER: Ok, no issues. Thank you for your kind service.

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