You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: Could you please help me in flight ticket booking process from IAD to MCO?

ASSISTANT: Sure, I am here to help you. May I know your travel dates please?

USER: Thank you for your response, I want to take off on Dec 15 and book my return ticket also on Dec 17.

ASSISTANT: Ok, do you have any specifications?

USER: I would like to fly in business class flight.

ASSISTANT: Ok, hold on for a moment. Let me check the best available flight for you.

USER: Ok. I will prefer 1 break in between my journey please check with this also.

ASSISTANT: May I know your name please?

USER: Sure, my name is Steven Walker.

ASSISTANT: Sorry Steven Walker, there are no flights available on your requested dates.

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

ASSISTANT: Welcome, thank you for choosing us. Have a great day.