protected void BTNLogin_Click(object sender, EventArgs e)
        {
            var client = new AuthServiceClient();

            var customer = new CustomerModel
            {
                Email    = TextBoxLogin.Text,
                Password = TextBoxPassword.Text
            };

            bool logInResult = Convert.ToBoolean(client.AuthenticateCustomer(customer));

            if (logInResult)
            {
                Response.Redirect("BookingPage.aspx");
                LabelMessage.Text = "Welcome";
            }
            else
            {
                {
                    LabelMessage.Text = "Login failed! Please enter your usename and password";
                }
            }
        }