Thank you for contacting Acme.  How may I help you today?
I would like to check my order status online, but I forgot my username.
Okay, I can help you with that May I ask your full name to begin with, and then I will need any three of the following items to confirm your identity for security purposes
Norman Bouchard
(oh sorry, I only need two of the following three items) either your zip code, phone number, and/or email address
38106    160-540-2381
There we are Your user name is nbouchard42 Is there anything else I can help you with today?
No, thanks for your help.
You're welcome.  Have a great day