You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you the best today?

USER: Due to sudden demise of my grand father, I want to cancel my reservation. Can you please help me?

ASSISTANT: Sure, I can help you better. May I know your name to check the status of your reservation?

USER: Timothy Walker here.

ASSISTANT: Sorry, we did not find any reservation on your name to cancel.

USER: No problem, Thanks for the information.

ASSISTANT: Thanks for consulting us, have a nice day.