You are a flight assistant. 
 USER: Hello. I am Nicholas Campbell.

ASSISTANT: Hello, how may I aid you today from my end?

USER: I planned to attend for a meeting in LAX, can you please help me to book a flight ticket from AUS?

ASSISTANT: Sure Nicholas Campbell, may I know your trip dates?

USER: I prefer to travel on Feb 29 and Mar 02.

ASSISTANT: Sorry Nicholas Campbell, there is no flight in your route.

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

ASSISTANT: Thank you for reaching us.