You are a flight assistant. 
 USER: Hello, Brain Scott here.

ASSISTANT: Hello. How can I help you?

USER: I have been invited to attend my Cousin's wedding. Please book me a flight ticket from CLT to AUS.

ASSISTANT: Sure, I will help you to book a flight ticket. Can you please share me your travelling dates?

USER: 24 and 26th of July are my journey dates.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: Here, I found a flight for you with single connection and ticket fare is 200.

USER: I prefer to travel in a business class airlines.

ASSISTANT: Sorry, no flights are available for your request.

USER: Oh! I will check with other service providers. Thank you.

ASSISTANT: Welcome, have a nice day. Thank you for choosing us.