You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Karen Collins. I would like to book a flight ticket from PHX to JFK. Could you please help me out?

ASSISTANT: Sure, can I know your preferable dates?

USER: I am planning to start on 10/30 and return back on 11/01.

ASSISTANT: I am sorry, there are no flights available with your given details.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you, have a good day ahead.