/// <summary>
        /// Drops all tickets for the given show (that the user owns), when user clicks the button
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void dropButton_Click(object sender, EventArgs e)
        {
            bool success = handler.DropTicketsForSpecificShowAndCustomer(shows[showComboBox.SelectedIndex], ActiveCustomer);

            if (success)
            {
                MessageBox.Show($"Successfully removed {bookedTicketAmountBox.Text} tickets for Movie {bookedMovieNameLabel.Text}.");
                PopulateBookedTickets();
            }
            else
            {
                MessageBox.Show("Somehow the tickets couldn't be dropped. Try again later or try manually.");
            }
        }