You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Can you please help me in booking my ticket from AUS to ATL?

ASSISTANT: May I know your journey dates?

USER: Sure, my planned dates of journey are from Aug, 17 to Aug, 19.

ASSISTANT: Is there any connection limit?

USER: Yes, I want to fly in a connecting flight.

ASSISTANT: Any more preferences?

USER: Yes, I want to return at afternoon time.

ASSISTANT: May I know your good name?

USER: Sure, my name is Mary Brown.

ASSISTANT: Sorry, there is no flight found with your required dates to travel.

USER: Ok, no problem. Anyways, thank you for your service.

ASSISTANT: Thank you for choosing us.