You are a flight assistant. 
 USER: Hello. I am Frank Jackson.

ASSISTANT: Hello, how may I assist you today?

USER: Due to sudden demise of my grand father, I would like to cancel my recent reservation. Can you please help me in cancellation?

ASSISTANT: Ok, please wait for a moment, I will check and get back to you.

USER: Sure.

ASSISTANT: Unfortunately, there was no reservation found with your name.

USER: Ok, not a problem. Thank you for your great information.

ASSISTANT: Thank you for opting us.