You are a flight assistant. 
 USER: Hello, Sarah Rodriguez here.

ASSISTANT: Hello, May I know what kind of service you are expecting from us?

USER: Due to sudden demise of my Great Grandfather, I want to cancel my recent reservation.

ASSISTANT: Sure, I am Pleased to help you. Give me some time, I will check and get back to you.

USER: Sure.

ASSISTANT: Thank you for your patience. There is no recent reservation found on your name.

USER: Ok.

ASSISTANT: Thank you for approaching us, Have a good day.

USER: Thank you for providing information.