You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I do for you?

USER: I am Stephen King. Can you cancel my reservation, which is done earlier?

ASSISTANT: Sure, please wait a minute.

USER: Ok.

ASSISTANT: I am sorry to inform you that there is no reservation found on you name.

USER: No worries, thank you for your information.

ASSISTANT: Thank you.