def initUI(self):
        chat = QLabel('Chat')

        chatEdit = QTextEdit()
        sendEdit = QLineEdit()
        nameEdit = QLabel('Name: ')

        btnSend = QPushButton('Отправить')

        grid = QGridLayout()
        grid.setSpacing(10)

        grid.addWidget(chat, 1, 0)
        grid.addWidget(nameEdit, 1, 1)
        grid.addWidget(chatEdit, 2, 0, 3, 0)

        grid.addWidget(sendEdit, 5, 0)
        grid.addWidget(btnSend, 5, 1)

        self.setLayout(grid)

        self.setGeometry(300, 300, 350, 300)
        self.setWindowTitle('CHAT')
        self.show()

    def registration(self):

        alias, ok = QInputDialog.getText(self, 'Your NAME', 'Enter your name:')

        if ok and alias != '':
            self.nameEdit.setText(name)
            self.nameEdit.adjustSize()
            return alias