public void DialogConstructor()
{
var sut = new MainDialog(_mockLogger.Object, null, _mockBookingDialog);
Assert.Equal("MainDialog", sut.Id);
Assert.IsType <TextPrompt>(sut.FindDialog("TextPrompt"));
Assert.NotNull(sut.FindDialog("BookingDialog"));
Assert.IsType <WaterfallDialog>(sut.FindDialog("WaterfallDialog"));
}