How do I respond to this?

[Mr. Meow]

So it's father's day, and my friend made a post on facebook about how he misses his father, and how he doesn't want him to spend father's day alone. His dad died a few years ago from cancer.

How do I respond? I want to write something nice and something that'll cheer him up. Something short and sweet. He's been a good friend, but I just don't know what to say.

[Katryna]

Maybe if your not busy go by and see him. Or just say you are thinking about him and you are very sorry