You are a flight assistant. 
 USER: I am Jonathan Martinez.

ASSISTANT: Hello, how may I assist you today?

USER: Due to sudden demise of my great grandfather I want to cancel my reservation, can you please help me out?

ASSISTANT: Sure, please wait for a while.

USER: Ok.

ASSISTANT: We did not found any flight reservation on your given name.

USER: Ok, no issues.

ASSISTANT: Thanks for choosing us.

USER: Thank you.