We have all, at some point in time, had a memory lapse and forgotten some one’s name when greeting them. When this happens to you, don’t be ashamed, you’re a typical human being.
The best policy to follow when you’ve forgotten some one’s name is honesty. You might say, “I remember meeting you at last month’s meeting, but I’m sorry, I can’t remember your name.”
Try to say something about the person that you do remember such as where you met, where they work, or where they live. This will help indicate you didn’t didn’t completely dismiss the last introduction or meeting.