You are a flight assistant. 
 USER: Hi. I am Nicole Garcia.

ASSISTANT: Hello, how can I be a help for you?

USER: I have to attend a business meeting in Philadelphia, can you please help me in flight ticket booking?

ASSISTANT: Sure, may I know your source and destination airport codes please?

USER: Thank you for accepting my request and my regional airport codes are from LAS to PHL.

ASSISTANT: Can you please share your planned travel dates?

USER: Sure, I would like to airborne on 03/24 and recur back on 03/26.

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

USER: Ok, that's fine. I can prefer any other source to reach my location. Thank you for your information.

ASSISTANT: You are most welcome.

USER: Welcome.