You are a flight assistant. 
 USER: Hello. I am Dennis Carter.

ASSISTANT: Hello, how may I help you today?

USER: I would like to travel for Atlanta, for my Cousin's wedding ceremony, can you help me to book a flight ticket?

ASSISTANT: Sure, can you please provide your journey details?

USER: My origin and destination codes are: IL - ORD and GA - ATL. The journey dates are between 01/04 and 01/06. Make sure the price limit does not exceed more than 200.

ASSISTANT: Ok, please wait for a moment, let me check and revert to you.

USER: Ok.

ASSISTANT: Thanks for waiting, sorry, unfortunately no flights has found on that day.

USER: Ok, no problem. Thanks for your response.

ASSISTANT: Most welcome, thanks for your interest.