You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Rebecca Adams, can you help me with the flight ticket booking from AUS to LAS?

ASSISTANT: Sure, I am gleeful to help you. Please share me your trip dates.

USER: Ok, my travel dates are 07/09 and 07/11 respectively.

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

USER: Thank you for assisting me.

ASSISTANT: Thank you for reaching us.

USER: Not a problem. I will book any other day.