Facebook notifications on iphone?

I just downloaded the facebook app on my iphone. When I log in, it opens up a window that asks whether I want to "turn on notifications." On that window it says "John Smith sent you a message." John Smith is one of my FB friends, but I don't see a message from him. Does this window generate a fake sample notification with a real FB friend's name? Or should I really have a message from that person?

It's a Dummy message…