TrainPlane

using System;
using System.Collections.Generic;
namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
            string userInput;
            bool isWorking = true;
            Database database = new Database();

            while (isWorking)
            {
                Console.ReadKey();
                Console.Clear();
                database.ShowInfo();
                Console.WriteLine("\n\n\nМеню:\n1.Составить план поезда\n2.Выйти");
                userInput = Console.ReadLine();

                switch (userInput)
                {
                    case "1":
                        Console.WriteLine("Пункт отправки: ");
                        string firstdirection = Console.ReadLine();
                        Console.WriteLine("Пункт прибытия: ");
                        string secondDirection = Console.ReadLine();
                        database.AddTrainPlane(firstdirection, secondDirection);
                        Console.WriteLine("Поезд отправлен");
                        break;
                    case "2":
                        isWorking = false;
                        break;
                    default:
                        Console.WriteLine("Нет такой команды");
                        break;
                }
            }
        }

        class Direction
        {
            private string _firstDirection;
            private string _secondDirection;

            public Direction(string firstDirection, string secondDirection)
            {
                _firstDirection = firstDirection;
                _secondDirection = secondDirection;
            }

            public void ShowInfo()
            {
                Console.Write($"{_firstDirection} - {_secondDirection} || ");
            }
        }

        class Train
        {
            private Random _random;
            private int _railwayCarriage;
            private int _countPlace;
            private int _countPassengers;

            public Train()
            {
                _random = new Random();
                _countPassengers = _random.Next(10, 101);
                _countPlace = _random.Next(5, 16);
                float needRailwayCarriage = Convert.ToSingle(_countPassengers) / Convert.ToSingle(_countPlace);
                _railwayCarriage = Convert.ToInt32(Math.Ceiling(needRailwayCarriage));
            }

            public void Showinfo()
            {
                Console.Write($"Пассажиров: {_countPassengers} || Мест в вагоне: {_countPlace} || Вагонов: {_railwayCarriage}\n");
            }
        }

        class Database
        {
            private List<Direction> _direction;
            private List<Train> _train;

            public Database()
            {
                _direction = new List<Direction>();
                _train = new List<Train>();
            }

            public void AddTrainPlane(string firstDirection, string secondDirection)
            {
                _direction.Add(new Direction(firstDirection, secondDirection));
                _train.Add(new Train());
            }

            public void ShowInfo()
            {
                if (_direction.Count == 0)
                {
                    Console.WriteLine("Нет активных рейсов!");
                }
                else
                {
                    Console.WriteLine("Рейсы: ");
                    for (int i = 0; i < _direction.Count; i++)
                    {
                        _direction[i].ShowInfo();
                        _train[i].Showinfo();
                    }
                }
            }
        }
    }
}