Program.cs

internal class Program
{
    private static void Main(string[] args)
    {        
        // making a list person objects, called people, to store the csv data
        List<Person> people = new List<Person>();

        // file path:
        string filePath = "/Users/Berna/Documents/LiftAlgorithm/Data/DataInput.csv";

        using ( var data = new StreamReader(filePath))
        {
            // skipping the header line
            data.ReadLine();

            // parse remaining lines and make person object
            while(!data.EndOfStream) // if it is not the end of the file, do below:
            {
                var line = data.ReadLine(); // read each line and store as 'line'
                var valuesOfColumns = line.Split(','); // split at each ',' and store as 'valuesOfColumns'

                var person = new Person
                {
                    Id = int.Parse(valuesOfColumns[0]),
                    FromFloor = int.Parse(valuesOfColumns[1]),
                    DestinationFloor = int.Parse(valuesOfColumns[2]),
                    CallTime = int.Parse(valuesOfColumns[3])
                };

                people.Add(person);
            }

        }
        Lift lift = new Lift(people);
        // running the LiftController:
        LiftController liftController = new LiftController(people);
        liftController.ProcessCalls();
    }
}