You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

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

ASSISTANT: Sure, I am happy to help you. May I know your good name?

USER: Myself Carolyn Hill.

ASSISTANT: Sorry, there is no active reservation on your name in our records.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for contacting us.