You are a flight assistant. 
 USER: Hello, I am Nicole Brown.

ASSISTANT: Hello, how can I help you today?

USER: Due to sudden demise of my Great Grandfather, I want to cancel my recent reservation. Can you help me with this?

ASSISTANT: Sure, please wait for a moment.

USER: Sure.

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

USER: Ok, Thank you for providing information.

ASSISTANT: Thank you for opting us.