You are a flight assistant. 
 USER: Hi, Ryan Carter here.

ASSISTANT: Hello Ryan. How can I assist you?

USER:  I am a journalist, I have a training session in CNN news center, can you please check the flights availability to Austin?

ASSISTANT: Sure, can I know your travel dates?

USER: Sure, my journey dates are 10/16 to 10/18.

ASSISTANT: Please share your airport codes.

USER: Sure, my source code is PHL and destination code is AUS.

ASSISTANT: Sorry Ryan, there is no flight available on your requested dates.

USER: No problem, thank you so much.

ASSISTANT: You are welcome.

USER: Most welcome.