How to communicate with mental ill in helpful and calming manner?

case-


one men is upset,angry and frightened and starts to swear at you bcoz he missed his bus and was late to his appointment. you know he suffers from a mental illness.How to communicate with mental ill in helpful and calming manner?
First, you need to remain calm yourself. If he sees that you're upset, it will only make him panic more. Then, tell him in a calm voice...';It's okay. Here's what we'll do. We'll call the place where you have your appointment and let them know you're going to be a little late. If they say that's okay, we'll catch the next bus. If they can't see you today, we'll ask them to reschedule it and we'll make it just fine the next time.';





If this person is just a fellow bus rider...you say ';It will be okay. I've been late for appointments too, and if you call the place where you have your appointment, I'm sure they can help you.'; Just reassure him that it happens to everyone and it can be fixed.How to communicate with mental ill in helpful and calming manner?
listen
talk to him about the problem...


tell him about how to solve him problem..(like catch an auto or a train...)


just be friendly and talk to him in a cool manner


tat would make him feel better