You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Myself Frank Hall, I would like to travel ATL from DFW, can you help me in booking my ticket?

ASSISTANT: Sure Hall, may I know your travelling dates?

USER: My journey dates are 08/18 and 08/20.

ASSISTANT: Ok, wait a moment.

USER: Please make sure that the connection limit should not exceed 1.

ASSISTANT: Sorry to say this, there is no flight available for your request.

USER: Thank you for checking.

ASSISTANT: You are welcome.