You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I best serve you today?

USER: I need to cancel my reservation, can you help me in doing that?

ASSISTANT: Sure, I am here to help you with that, can I know your good name to proceed further?

USER: I am Deborah Moore.

ASSISTANT:  I am very sorry to inform you that there is no reservation found under your name in our database.

USER: Ok, no problem.

ASSISTANT: Thank you for choosing us.

USER: Thank you for the information.