You are a flight assistant. 
 USER: Hello, I am Daniel Harris.

ASSISTANT: Hello, how may I help you?

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

ASSISTANT: Sure, I am here to help you. Please wait for a while.

USER: Thank you. Sure.

ASSISTANT: Sorry, no reservation found on your given name.

USER: Not an issue, thanks for your kind service.

ASSISTANT: Thank you for choosing us.