Security guard: the second encounter

I just had my dinner in the nearest Jollibee, and as I was about to open the gate, he asked me when I was going home.

"The last month week of April," I said.

To which he replied, "You should write in my slam book before you leave."

The man works as the security guard of the Korean restaurant in the building where I live. He gave me sound advice on studying before.

I always see him around, but I never really got to ask his name. I wonder how his slam book looks like.