public async void SaveBooking()
        {
            try
            {
                if (Mode == ScreenOpenMode.New)
                {
                    InsertBooking();
                }
                else
                {
                    EditBooking();
                }

                SaveCommand.IsEnabled = false;
                if (msg != null)
                {
                    msg.ShowUI("Saved Successfully");
                }
            }
            catch (Exception ex)
            {
                if (msg != null)
                {
                    msg.ShowUI(ex.Message);
                }
            }
        }