You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Catherine Carter, can you help me to book a flight ticket from LGA to AUS?

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

USER: Ok, my travel dates are 06/29 and 07/01 respectively.

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

USER: Ok, no problem. Thank you for choosing our agency.

ASSISTANT: Thank you for reaching us.