You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Can you please check the availability of flights from JFK to PHX?

ASSISTANT: Sure, I can help you with that. May I know your travel dates please?

USER: My planned journey dates are Nov 30 and return on Dec 2.

ASSISTANT: Can I have your good name please?

USER: Sure, my name is Dorothy Robinson.

ASSISTANT: May I know your class and airline preference please?

USER: I am fine with any class.

ASSISTANT: Please let me know if you have any other specifications.

USER: I don't have any other specifications.

ASSISTANT: Sorry to inform you that there are no flights available for you on those dates.

USER: Ok, thanks for your assistance.

ASSISTANT: Thank you for choosing us.