This is probably the best and most realistic answer here. Just tell them that you're here to work and not chitchat. I've done a similar thing when asked why I don't take a break so we (my superior and I) could go on break together. I work less than 6 hours so I'm not legally required to go on a 30 minute break.
Smh at a few of those other comments that read more like someone trying to write bad fanfiction.