You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you please help me to book a flight from DFW to CLT?

ASSISTANT: Sure, can you please let me know your travelling dates?

USER: Sure, I want to travel on Nov 20 and need to return on Nov 22.

ASSISTANT: Is there any connection limit?

USER: I am looking for a flight with single stopover.

ASSISTANT: Are there any other specifications for you?

USER: No.

ASSISTANT: May I know your good name?

USER: Myself Stephen Thompson.

ASSISTANT: Sorry, no flights are available in this route as per your requested dates.

USER: Ok, no problem. Thank you for checking.

ASSISTANT: Thank you for reaching us.