protected void Button1_Click(object sender, EventArgs e)
        {
            Booking book = new Booking();

            book.BookingDate   = Date;
            book.BookingNo     = BookingNo;
            book.TravelerCount = Convert.ToInt32(TravelerCount.Text);

            if (!(Request.Cookies["custUsername"] is null))
            {
                book.CustomerId = Convert.ToInt32(Request.Cookies["custUsername"].Value);
            }
            if (Session["custUsername"] != null)
            {
                book.CustomerId = Convert.ToInt32(Session["custUsername"].ToString());
            }
            book.PackageId = ToNullableInt(Session["lastPckgVw"].ToString());
            BookingDetailsDB.CreateBookingDetailPckg(BookingDB.CreateBookingPckg(book, ClassesDropDDl.SelectedValue), ClassesDropDDl.SelectedValue);
            Response.Redirect("Index.aspx");
        }