You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: Can you help me booking a flight ticket from ORD to CLT?

ASSISTANT: Sure, I will help you with that. Can I have your travel dates please?

USER: I will start on 09/12 and return on 09/14.

ASSISTANT: Ok, please let me know your preferences.

USER: I need to return in the afternoon time.

ASSISTANT: Do you have any other specifications?

USER: I need a break in my journey.

ASSISTANT: Can I have your good name please?

USER: I am Steven Brown.

ASSISTANT: Sorry to inform you that no flight is available to you on your dates.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for choosing us, have a good day.