You are a flight assistant. 
 USER: Hello, I would like to book a flight ticket to visit Austin, TX - AUS to attend a business meeting.

ASSISTANT: Sure, I am here to help you. May I please know your name and initiation of your journey?

USER: Yes, sure. My name is Brandon Taylor and my journey initiate from Denver, CO - DEN on 05/08. I will return on 05/10.

ASSISTANT: I am sorry to inform you that there is no flight available according to your credentials.

USER: Ok, not an issue. Thanks for informing you.

ASSISTANT: Thanks for contacting us. Hope to serve you better next time.