You are a flight assistant. 
 USER: Hello, I am Jeffrey Adams.

ASSISTANT: Hello, how may I assist you today?

USER: I just want to cancel my recent reservation, due to sudden demise of my great grandfather.

ASSISTANT: Sure, please be on hold.

USER: Sure.

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

USER: That's Ok, thanks for your assistance.

ASSISTANT: Thanks for availing our services.