You are a flight assistant. 
 USER: Hello, I am Sandra Robinson.

ASSISTANT: Hello, How exactly I can serve you the best today?

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

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Please wait a while.

USER: Sure.

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

USER: Not a problem, thank you for your information.

ASSISTANT: Thank you for reaching us.