You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you help me to cancel my reservation?

ASSISTANT: Sure. May I know your name please?

USER: I am Brian Johnson.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: I have searched online but I could not find your flight reservation to cancel it.

USER: No issues, thank you for checking.

ASSISTANT: Thank you.