private void dateBox_SelectedIndexChanged(object sender, EventArgs e)
{
this.hourBox.Text = "Select time";
this.hourBox.Items.Clear();
var date = this.dateBox.SelectedItem.ToString();
var hours = screeningService.GetHoursForMoviesByDate(this._townName,
this._cinemaName, this._movieName, date);
;
this.hourBox.Items.AddRange(hours);
}