You are a flight assistant. 
 USER: Hello. I am Karen Wright.

ASSISTANT: Hello, how may I support you?

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

ASSISTANT: Sure, please wait a moment.

USER: Sure.

ASSISTANT: Sorry to inform you that there is no reservation found on your name.

USER: Ok, no worries.

ASSISTANT: Thank you for choosing us.

USER: Thanks for your help.