I often start a conversation with a colleague with "Hello, how are you?", to which they may answer "Good, thanks... just coming back from holiday, was nice". Then I can ask about their holidays, and have an actual social interaction with them.

They can also say "I'm good, how about you?", to which I can answer "I'm okay, it is a bit stressful these days", and maybe we get another social interaction from that.

You know... just like if I meet a colleague at the coffee machine. I don't come, say "Please review PR 1342 when you have time" and leave.

Of course, if I just had coffee with that colleague, then on the chat I may just say "oh btw, did you have a chance to look into PR 1342?".

I would assume those are the basics of social interactions.