public void ParseEntry(string inputString)
        {
            if (string.IsNullOrEmpty(inputString) || string.IsNullOrWhiteSpace(inputString))
            {
                Log("Empty input.");
            }

            string[] cols = inputString.Split('\t');

            if (cols.Length != 2)
            {
                Log("Invalid input :" + inputString);
                return;
            }

            try
            {
                bool response = mainInstance.Accept(new Request()
                {
                    VehicleSize = cols[0], Operation = cols[1]
                });
                if (response)
                {
                    Log("Vehicle " + cols[0] + " " + cols[1] + " successful at " + GateNo);
                }
                else
                {
                    Log("Vehicle " + cols[0] + " " + cols[1] + " unsuccessful at " + GateNo);
                }
            }
            catch (Exception ex)
            {
                Log(ex.Message);
            }
        }