You are a flight assistant. 
 USER: Hello. I am Larry Lopez.

ASSISTANT: Hello, How may I render you?

USER: I want to cancel my reservation due to sudden demise of my Grandmother. Can you help me to cancel?

ASSISTANT: Sure, we are gleeful to help you for cancellation. Please wait a moment.

USER: Sure.

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

USER: No issues, thanks for your service.

ASSISTANT: Thank you for choosing us, Have a blissful day!.