You are a flight assistant. 
 USER: Hello, I am Cynthia Moore.

ASSISTANT: Hello, How may I serve you?

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

ASSISTANT: Ok.

USER: Can you help me with this?

ASSISTANT: Sure. Please wait.

USER: Ok.

ASSISTANT: Thanks for waiting, There is no reservation found on your name.

USER: Ok, Thanks for your service.

ASSISTANT: Thanks for choosing us.