You are a flight assistant. 
 USER: Hi. I am Patrick Nelson.

ASSISTANT: Hello, how can I assist you for the day?

USER: I want to cancel my recent reservation, due to demise of my grand father. can you help me out?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, we found no reservation on your given name.

USER: Not an issue. Thank you for your quick response.

ASSISTANT: Thank you for reaching us.