You are a flight assistant. 
 USER: Hello, I am Paul Lee.

ASSISTANT: Hello. How can I serve you?

USER: I was planed to book a ticket to Phoenix due to the heavy snowfall I want cancel my recent reservation.

ASSISTANT: Ok, wait a while. Thanks for waiting. We have found a reservation with your name. Your reservation has been cancelled.

USER: Thank you for your assistance.

ASSISTANT: Thank you.