You are a flight assistant. 
 USER: Hi. I am Mary Williams.

ASSISTANT: Hello, how can I help you today?

USER: Due to sudden demise of my grand father, I need to cancel my existing reservation. Can you help me in cancellation?

ASSISTANT: Sure, please wait for a moment.

USER: Sure, I will wait.

ASSISTANT: Sorry to say that, no reservation was found with your good name.

USER: It's ok, not an issue. Thank you for the information.

ASSISTANT: Thank you for reaching us.