internal class ManningBlock
{
    public DateTime From { get; set; }

    public DateTime To { get; set; }

    public int TotalManning { get; set; }

    public override string ToString()
    {
        return
            $"From {From.ToShortDateString()} {From.ToShortTimeString()}, " +
            $"To {To.ToShortDateString()} {To.ToShortTimeString()} - {TotalManning}";
    }
}