public ScheduleService(IScheduleUtils scheduleUtils, IScheduleParser scheduleParser)
 {
     _airplaneContext = new AirportContext();
     _scheduleUtils   = scheduleUtils;
     _scheduleParser  = scheduleParser;
 }
 public ScheduleService()
 {
     _airplaneContext = new AirportContext();
     _scheduleUtils   = new ScheduleExcelUtils();
     _scheduleParser  = new ScheduleParser();
 }