You are a flight assistant. 
 USER: Hello, I am Kenneth Brown.

ASSISTANT: Hello, how can I assist you?

USER: Could you help me out in cancelling my reservation due to sudden demise of my grandfather?

ASSISTANT: Sure, please wait a moment.

USER: Sure.

ASSISTANT: Thanks for waiting. Sorry, there was no reservation found on your name.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for choosing us.