You are a flight assistant. 
 USER: Hi, Christopher Martinez here.

ASSISTANT: Hello, how can I help you?

USER: Due to the sudden demise of my granny, I am unable to catch a flight. I request you to cancel my existing reservation.

ASSISTANT: Sure, give me a minute.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found under your name.

USER: Ok, no issues. Thank you for your assistance.

ASSISTANT: Thank you for reaching us.