Face-to-face conversation is very beneficial to your mental health. This translates directly to your work performance. Through face-to-face conversation, people build trust and are much better at collaborating on future projects and working together. It also gives you a few minutes each day to take a much-needed break away from your desk which will allow you to focus better and be more productive after your break. Oftentimes, through face-to-face conversation, great ideas or solutions are often created.
If you prefer, you can invite your co-worker to go to a coffee shop near your office.