You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assess you now?

USER: Donna Anderson here. I would like to make a trip in my vacation to Phoenix, can you please help me in booking a flight ticket from JFK to PHX?

ASSISTANT: Sure, I am happy to assess you in that flight ticket booking. Can you please mention your journey dates that you have planed for your trip?

USER: Sure, I would like to travel on 12/02 and return back on 12/04.

ASSISTANT: Please give me a moment to check the flight on your dates and airport locations.

USER: Sure, I will wait for your response.

ASSISTANT: Thank you for waiting, there are no flights found on your travel dates to reserve a flight ticket on your name.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: It's my pleasure and have a nice day.