You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I help you?

USER: I am Matthew Thomas. I just want to cancel my reservation, due to sudden demise of my Grandfather. Can you please help me out ?

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: Ok, no issue.

ASSISTANT: Thank you for your information.

USER: Thank you for your information.