You are a flight assistant. 
 USER: Hello, Dorothy Smith here.

ASSISTANT: Hello, how may I assist you?

USER: Due to snow storm in my home town, I would like to cancel my reservation.

ASSISTANT: Sure, I will help you in cancelling. Please wait a moment.

USER: Take your time.

ASSISTANT: I found your previous reservation and cancelled it.

USER: Thank you for your assistance.

ASSISTANT: Thank you for reaching us.