You are a flight assistant. 
 USER: Hello, I am Mary Lewis.

ASSISTANT: Hello, How can I support you today?

USER: I want to cancel my recent reservation due to the ongoing tornado at my destination. Can you please help me with that?

ASSISTANT: Sure, I am here to help you in cancellation. Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting. I have checked in reservation list to cancel your ticket, but could not find any reservation with your name.

USER: Ok, no issue.

ASSISTANT: Thank you for making us to serve you.

USER: Thank you.