You are a flight assistant. 
 USER: Hi, my name is Karen Hernandez.

ASSISTANT: Hello Karen,what can I do for you today?

USER: Due to the sudden demise of my Granny, I had a request to you to cancel my existing reservation.

ASSISTANT: Unfortunately, there is no reservation found on your name. Sorry for the trouble.

USER: Ok, no issues. I appreciate your service.

ASSISTANT: Thanks for opting us. Hope to serve you better next time.