You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I have a conference meeting at Las Vegas this week day. Can you please help me in reserving the ticket from MCO to LAS?

ASSISTANT: Sure, I am happy to help you with that. Can I have your travel dates please?

USER: My journey dates are Dec 11 to Dec 13.

ASSISTANT: Do you want to go any special class?

USER: I prefer a business class.

ASSISTANT: Are you looking for any connections in between your journey?

USER: I need a connecting flight.

ASSISTANT: Ok, please let me know the preferable timings of your journey.

USER: I am ok with any timings to reach my destination.

ASSISTANT: Can I have your good name please to proceed further?

USER: I am Carol Robinson.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry Carol Robinson, no flight is available to you in business class due to all tickets have filled in that class.

USER: No issue, thank you.

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