You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: Could you please help me in flight ticket booking process from ORD to CLT?

ASSISTANT: Sure, I will render you. Please send your travelling dates.

USER: Thank you for your response, I want to take off on July 04 and book my return ticket also on July 06.

ASSISTANT: Noted. Do you have any preferences?

USER: I want to return in morning time.

ASSISTANT: May I know your name please?

USER: Sure, my name is Donna Parker.

ASSISTANT: Sorry, there is no flight available with your requirements.

USER: That's ok, no problem. Thank you for your information.

ASSISTANT: You are welcome, have a nice day.