case 2:
                            Console.Write("Search for a title: ");
                            keyword = Console.ReadLine();
                            var entries = logBook.Where(entry => entry.Contains(keyword));

                            if (entries.Count() == 0)
                            {
                                Console.WriteLine("There is no title with that name!");
                            }
                            else
                            {
                                for (var i = 0; i < entries.Count(); i++)
                                {
                                    var entry = entries.ElementAt(i);
                                    if (entry[0].Contains(keyword))
                                    {
                                        Console.WriteLine(entry[0]);
                                    }
                                }
                            }
                            break;