public void conversation(String username, String message) {
        if (usernameToChats.containsKey(username)) {
            usernameToChats.get(username).setVisible(true);
        } else {
            ConversationView answer = new ConversationView(clientModel,
                    this.username, username);
            usernameToChats.put(username, answer);
            answer.setVisible(true);
        }
        // Adds new text to the TextArea
        usernameToChats.get(username).changeTextArea(
                username + " (" + getTime() + ") - " + message);
    }