How Do You Help?

A guy walked into the bookstore this evening where I was browsing and he obviously was dealing with some mental health issues ..... and I have to compliment the store employees who instead of being insensitive and forcing him back outside, were genuinely trying to help him .... but it's scary. He was responding to their efforts and questions with answers that made no sense and it's like, what do you do at that point? How do you help when he can't communicate what he needs? He wasn't violent or loud and demanding .... quite the opposite actually. More like he was lost and naïve to the world around him.