You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Katherine Miller here. For my business meeting purpose, I came Austin. Now, for my next meeting I want to go Houston. Can you please check once is there any flight available from AUS to LAS?

ASSISTANT: Good, may I know your trip dates?

USER: From 03/20 to 03/22.

ASSISTANT: There is a flight available with us from Spirit airline. Do you want to proceed?

USER: Yes, you can proceed.

ASSISTANT: Ok, your ticket is booked.

USER: Thank you.

ASSISTANT: Most welcome.