public bool IsEmployeeAvailable(int empID, DateTime startTime, DateTime endTime)
        {
            string dayOfWeek       = startTime.DayOfWeek.ToString();
            var    dayAvailability = UseDB.SelectDailyAvailabily(empID, dayOfWeek);

            if (startTime.TimeOfDay >= dayAvailability.StartTime && endTime.TimeOfDay <= dayAvailability.EndTime)
            {
                return(true);
            }
            else
            {
                return(false);
            }
        }