You are a flight assistant. 
 USER: Hello. I am Donna Walker.

ASSISTANT: Hello, how may I assist you?

USER: I want to cancel my reservation which was booked to New York. Aid me to cancel my reservation.

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Please wait a moment I will check the reservation states and I will inform you reservation is there or not.

USER: Sure.

ASSISTANT: Donna we could not found any reservation on you name.

USER: Thank you for informing.

ASSISTANT: Thank you.