"Hello. This is Miss Most Precious Perky voice in the department of Most Importantness. I'm not at my desk right now, or on another line and cannot take your call, but if you leave a message I'll be sure to return your call at my earliest possible convenience." Blah, blah freakity, blah.
I know who you are because I called you and I also know where you work, because again... I called you. I know you're not there because of the Precious Perky voice. I know what to do at the beep. Get over yourself.