Chat over LAN in Linux

I am trying to set up a LAN chat with two users using Linux server and none of them is root. I have tried this two methods: write account_name on both computers And: nc -l port_number on first computer nc IP_adress port_number on second computer But the problem is whenever I write something and person on the other side hits enter it breaks also my line e.g: I am typing: "This is just a simenterple text". And this enter from another person breaks my line. Is there way how can I fix that? Or another way I can set up this chat?