How can I make a helper bot in chat?

How do I make a bot that chats certain things in a self-made chat?

First of all you would need to make your own chat gui, and not allow classic chat.

Then, you would need to have a list of messages the Helper Bot can say.

Finally, you would need a Timer, or a condition to be checked constantly so that the line of Text will be added.

Wow, this guy asks a question to make a helper bot in a chat, then we see a -1, PEOPLE ARE DEVOTING PEOPLE, PLEASE REMOVE THE DEMOTING SYSTEM.