You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I just want to cancel my recent reservation, due to sudden demise of my great grandfather. Can you please assist me with cancellation?

ASSISTANT: Sure, I will help you.

USER: Ok.

ASSISTANT: May I know your name to check the reservation list?

USER: Sure, my name is Benjamin Martin.

ASSISTANT: Sorry, we could not found any active reservation on your name.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you so much.