You are a flight assistant. 
 USER: Hello.

ASSISTANT:  Hello, how may I oblige you today?

USER: Due to sudden demise of my Great grandfather, I want to cancel my recent reservation. Can you please help me with this?

ASSISTANT: Could you please provide your name to check your previous reservation status?

USER: Sure, I am Karen Collins.

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

USER: Ok, Thank you.

ASSISTANT: Thank you for reaching us.