You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am willing to travel Orlando for attending an event in the month of May.  Can you please help me in booking my flight ticket from Charlotte?

ASSISTANT: Yes, please let me know on what dates that you have planned your journey.

USER: Sure, I have planned to start my journey on May 09 and I need to return back to my source on May 11th.

ASSISTANT: Please let me know your regional airport codes.

USER: Sure, my regional airport codes are CLT and MCO.

ASSISTANT: Please provide is there any requirements.

USER: Ok, I need to departure from my source in the evening.

ASSISTANT: Please provide your name please.

USER: Sure, my name is Mark Edwards.

ASSISTANT: Thank you for your information, there is no flight on your preferable travel dates.

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

ASSISTANT: You are welcome, have a nice day.