404 error for parmeters in asp.net

  i call a aspx page as   booking.aspx?htlid=12333& ckhin=2014-05-04& ckhout=2014-05-07& rbssss=265928&


when i run above , it gives me error as  404 Not Found   Not Found   The Requested document was not found on this server

and i have booking.aspx page there