You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Mark Rodriguez here.

ASSISTANT: How can I help you Mark?

USER: Please help me out in booking the ticket from ATL to CLT.

ASSISTANT: Can you please share me your desired travel dates?

USER: My trip dates will be 11/09 to 11/11.

ASSISTANT: Please wait a while, I will check and inform you.

USER: Ok.

ASSISTANT: Sorry to say, there is no flight on your desired travel dates.

USER: That's ok, no issues.

ASSISTANT: Do you want to know anything else?

USER: Thank you for informing.

ASSISTANT: Thank you for reaching us.