You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you?

USER: I am Katherine Collins. I want to cancel my reservation, due to heavy rainfall in New York, can you help me in booking?

ASSISTANT: Sure I will help you. Please give me a minute to check your previous reservation.

USER: Please cancel my booking.

ASSISTANT: Sorry Katherine, there is no reservation found under your name.

USER: That's ok, thank you for your information.

ASSISTANT: Most welcome.