You are a flight assistant. 
 USER: Hello.

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

USER: Richard King here. I want to book a flight from ATL to BOS to attend a meeting, can you please help me in booking a flight ticket?

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

USER: Sure, my travel dates are from 10/11 to 10/13.

ASSISTANT: Ok, please wait a moment to check available flights for you.

USER: Ok, take your time.

ASSISTANT: Sorry Richard King, no flight is available to you on your dates.

USER: That's ok, no problem.

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

USER: Thank you for the information.

ASSISTANT: Most welcome.