protected void btnCancel_Click(object sender, EventArgs e)
        {
            try
            {
                IBookingManager bookingManager = BookingManagerFactory.GetInstance().Create();
                Cancelation     cancelation    = new Cancelation();
                cancelation.BookingID       = int.Parse(lblBookingID.Text);
                cancelation.CancelationDate = DateTime.Parse(lblDate.Text);
                int     noOfSeats  = int.Parse(lblSeats.Text);
                decimal ticketCost = decimal.Parse(lblCost.Text);
                decimal totalCost  = noOfSeats * ticketCost;
                cancelation.RefundAmount       = totalCost;
                cancelation.NoOfSeats          = noOfSeats;
                cancelation.CostPerTicket      = ticketCost;
                cancelation.UserName           = User.Identity.Name;
                cancelation.Miles              = GetHappyMiles(lblRefNo.Text);
                cancelation.BookingReferenceNo = lblRefNo.Text;

                DateTime dateOfJourney = DateTime.Parse(lblDate.Text);
                TimeSpan timeOfJourney = TimeSpan.Parse(lblDeptTime.Text);
                if (bookingManager.CancelAirTravelBooking(cancelation, dateOfJourney, timeOfJourney))
                {
                    lblSuccessMessage.Text = "Cancelation done successfully";
                    btnCancel.Enabled      = false;
                    PlaceHolder2.Visible   = true;
                    Page.MaintainScrollPositionOnPostBack = true;

                    lblCancelationDate.Text = DateTime.Now.ToLongDateString();
                    lblRefundAmount.Text    = cancelation.RefundAmount.ToString();
                }
            }
            catch (CancelationException cex)
            {
                lblErrMsg.Text       = cex.Message;
                PlaceHolder2.Visible = false;
            }
            catch (Exception)
            {
                lblErrMsg.Text       = "Sorry !!! Unable to cancel the booking. Please Try Again";
                PlaceHolder2.Visible = false;
            }
        }