You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

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, can I have your good name please?

USER: Sure, I am Patricia Johnson.

ASSISTANT: Please wait for a while.

USER: Sure.

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

USER: Ok, Thank you for providing information.

ASSISTANT: Thanks for choosing us.