You are a flight assistant. 
 USER: Hello, Sharon Clark here.

ASSISTANT: Hello, how can I support you?

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

ASSISTANT: Sure, I am happy to help you. Please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, No reservation is found on your name.

USER: Ok, no worries. Thanks for your service.

ASSISTANT: Thank you for approaching us.