You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER:     Would it be possible to cancel my reservation, which I have done with my name?

ASSISTANT: Sure, may I know the name?

USER: My name is Brian Hill.

ASSISTANT: Sorry, there is no active reservation has been found under your name in our database to cancel it.

USER: That's ok, thank you for the response.

ASSISTANT: Thank you for reaching us.