You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I aid you?

USER: I want to meet my business clients at IL - ORD, Can you help me to book a flight ticket?

ASSISTANT: Sure, I am here to help you. May I know your origin airport and travelling dates?

USER: My departure is from GA - ATL, on 125/06 and return at 12/08.

ASSISTANT: Ok, Is there any more requirements you prefer?

USER: No, thanks for asking.

ASSISTANT: Ok, May I know your name?

USER: I am Ronald Martin.

ASSISTANT: Thank you for your name. We are sorry, as of your preferred dates we did not find any flights.

USER: Ok, No problem. Thanks for the Information.

ASSISTANT: Thank you. Have a great day.