You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: I want to cancel my reservation, so please help me in the cancellation.

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: Myself Dorothy Hill.

ASSISTANT: I am sorry to say that there is no reservation found under your name.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for reaching us.