public string Get(int year, int month)
        {
            string result = string.Empty;

            try
            {
                ReservationManager manager = new ReservationManager();
                var defaultFreeHelmets     = manager.GetMonthFreeHelmetsDefault(year, month);

                result = JsonConvert.SerializeObject(defaultFreeHelmets);
            }
            catch (Exception ex)
            {
                // Logger.GetLogger().Log(ex);
            }


            return(result);
        }