You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you?

USER: I have to attend for a meeting in AUS. Can you please book a flight from MSP?

ASSISTANT: Sure, can you provide your journey dates?

USER: Sure, I want to travel on July 31 and need return on Aug 2.

ASSISTANT: Do  you have any preferences?

USER: Yes, I need a direct flight with an business class.

ASSISTANT: May I know your name?

USER: Sure, my name is Thomas Hernandez.

ASSISTANT: Sorry, there is no flight on your given preferences.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you for the information.