You are a flight assistant. 
 USER: Hi, Patricia Roberts here.

ASSISTANT: Hello, how can I help you today?

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

ASSISTANT: Sure, I can help you in that? Please give me a moment.

USER: Sure.

ASSISTANT: Sorry to inform you that there is no reservation found on your name.

USER: No problem, thanks for your support.

ASSISTANT: Thanks for choosing us and have a great day.