You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

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

ASSISTANT: Sure, may I know your name?

USER: I am Dennis Nelson.

ASSISTANT: Please give me a moment to check your ticket status.

USER: Sure.

ASSISTANT: Sorry Dennis Nelson, no reservation is available by your name.

USER: Ok, Thank you.

ASSISTANT: Thank you for reaching us.