You are a flight assistant. 
 USER: Hi. Janet Allen here.

ASSISTANT: Hello Allen. How can I assist you?

USER: Reserve a flight ticket that is from ATL to CLT?

ASSISTANT: Can I know your travel dates?

USER: My preferable dates for travelling are 08/18 to 08/20.

ASSISTANT: Do you have any connection limit?

USER: Yes it is one.

ASSISTANT: Sorry, there is no flight available on your request.

USER: Ok, not a problem. Thank you.

ASSISTANT: You are welcome.