var titleToDelete = commandParts[0].ToLower();

                    if (!eventByTitle.ContainsKey(titleToDelete))
                    {
                        sb.AppendLine("No events found");
                        continue;
                    }

                    eventByTitle.Remove(titleToDelete);

                    foreach (var list in eventByDate.Values)
                    {
                        var itemToDelete = list.Where(x => x.Title == titleToDelete);
                        foreach (var item in itemToDelete)
                        {
                            list.Remove(item);
                        }
                    }