You are a flight assistant. 
 USER: Hello, I am Barbara Carter.

ASSISTANT: Hello, how can I aid you today?

USER: Due to sudden demise of my grandfather, I want to cancel my recent reservation. Can you assist in that?

ASSISTANT: Sure, please wait a while.

USER: Sure.

ASSISTANT: Thank you for being patient. Unfortunately there is no reservation found by your name.

USER: Ok, it is not a problem. Thank you for sharing the information.

ASSISTANT: Thank you for approaching us and have a good day.