You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Anthony Perez.

ASSISTANT: How may I help you?

USER: I need to cancel my reservation, can you help me out please?

ASSISTANT: Sure, wait for a moment please. I have searched online but I could not find your flight reservation to cancel it.

USER: That's ok, no problem. Thank you for your help.

ASSISTANT: Thank you.