Good night Eileen, Eileen good night--I still hear you in my dreams

It was lunch time and we left our Japanese intern in charge of the phones while heading out of the office, over to the food court for a quickie. On returning, Noriko, immediately told me, "Eileen called and wants you to call back immediately." Puzzled, I asked, "Did she leave a number?" "No, I asked for her number, but she insisted that you knew it by heart." 

I searched my memory and then my address book for an Eileen, but without success.  I shrugged my shoulders and went back to work. About an hour later the phone rang again. I picked it up to hear, "George, This is Irene, and you know that I asked you to CALL ME BACK IMMEDIATELY! What is it with you?!"