You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Myself Michel Green.

ASSISTANT: Hope you are doing well Michel.

USER: I want to travel from LAS to ATL, can you please help me in booking the flight tikcet?

ASSISTANT: Sure, can you provide the travelling dates that you have planned on?

USER: My travelling dates are on 08/28 and return on 08/30.

ASSISTANT: Please wait for a moment, let me check with the available flights and revert you.

USER: Sure.

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

USER: Ho! I see. I'll plan the vacation for other month.

ASSISTANT: Thank you for approaching us.

USER: Thank you for the information.

ASSISTANT: Have a great day.