You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know your name?

USER: I am Patrick Mitchell.

ASSISTANT: Patrick, how can I be at your service today?

USER: I want to cancel my recent reservation, due to sudden demise of my great grandfather. Can you help me with that?

ASSISTANT: Sure, I can help you. Let me check with your details.

USER: Ok.

ASSISTANT: Sorry to notify, there is no reservation active on your name.

USER: Ok, no issue. Thanks for your assistance.

ASSISTANT: Thank you for reaching us.