Vinn is your co-worker, & he has a quiet and aloof nature. He hardly ever interacted with other co-workers, but the results of his work are always good & perfect. This made him a little shunned by some co-workers.

One day, other co-workers were talking about having a barbecue together after finishing work, including you. But Vinn continued to work at his desk, alone.

I just need to send the document file...

It's like he's used to not being asked to hang out with them.