You are a flight assistant. 
 USER: Hello, Jeffrey Roberts here.

ASSISTANT: Hello, how can I assist you?

USER: I need to book a flight ticket from PHX to JFK. Please help me in booking a flight ticket.

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

USER: My trip dates are from 11/26 to 11/28.

ASSISTANT: Ok, do you have any other specifications?

USER: I need to depart in the evening and I need a halt in between my journey.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

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

USER: No problem, thanks for your information.

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