private void bookTicketsToolStripMenuItem_Click(object sender, EventArgs e)
{
//tampilkan form book ticket step 1
BookTicketStep1Form obj = new BookTicketStep1Form();
obj.Show();
}
private void btnPrev_Click(object sender, EventArgs e)
{
//tampilkan form BookTicketStep1 dan tutup form ini
BookTicketStep1Form obj = new BookTicketStep1Form();
obj.Show();
this.Dispose();
}