You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What assistance do you need from our agency?

USER: I am Richard Thomas. I want to book a flight ticket from MCO to DEN. Could you help me in booking?

ASSISTANT: Sure, I am glad to help you. Can you please help me with your travel dates?

USER: My travelling dates are from May 17 to May 19.

ASSISTANT: Ok, please let me know your required number of connections.

USER: I need a halt.

ASSISTANT: Ok, do you have any airlines preference?

USER: I prefer for business class.

ASSISTANT: Sorry to inform you that, there are no business class flights available in this route.

USER: That's ok, no problem. Thank you.

ASSISTANT: You are welcome. Thank you for reaching us.