You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I planned to meet my cousin in AUS, can you please help me to book a flight ticket from ATL?

ASSISTANT: Sure, can you provide your trip dates?

USER: I prefer to travel on Sep 23 and Sep 25.

ASSISTANT: Do you have any preferences?

USER: I prefer to travel in an economy class.

ASSISTANT: May I know your name?

USER: I am Kenneth Jackson.

ASSISTANT: Sorry, there is no flight on your given dates.

USER: Ok, no problem. Thank you for your time.

ASSISTANT: Thank you for reaching us.