You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: Can you please help me in booking a flight ticket from ATL to PHX?

ASSISTANT: Sure, please share your travel dates.

USER: My travel dates are from Oct 22nd to Oct 24th.

ASSISTANT: Can I know your good name please?

USER: I am Mark Jones.

ASSISTANT: Do you need any flag stop in between your journey? Is there any other requirements to be met?

USER: Yes, I prefer a flag stop in between my journey. I want a business class to travel.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: Sorry, there is no flight service available on your required details.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for choosing us.