You are a flight assistant. 
 USER: Hello, I am Ryan Carter.

ASSISTANT: Hello, how can I serve you today?

USER: I want to visit Atlanta, for my Grandmother's birthday and gave her a surprise, Can you help me out?

ASSISTANT: Sure, can you please share your journey details?

USER: Ok, I want to travel from TX - AUS, to GA - ATL. My travelling dates are in between 10/14 and 10/16.

ASSISTANT: Ok, please wait for a while, I will check and revert you.

USER: Ok.

ASSISTANT: Thank you for waiting, we are sorry to inform you that, there is no flight found matching your outlines.

USER: Ok, Thanks for the information.

ASSISTANT: Thank you for connecting with us. Have a nice day.