You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know how best I can help you today?

USER: I am George Green. I want to travel from CLT to ORD, can you please help me to book a flight ticket?

ASSISTANT: May I know on which dates you are willing to travel?

USER: Sure, my travel dates are Aug 26 and Aug 28.

ASSISTANT: Do you require any stopovers in your journey?

USER: I need a 1 stopover in between my journey.

ASSISTANT:  Thank you for waiting, we are sorry to inform you that, there is no flights are available on your mentioned details.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you.