I am flying Economy with Cathay Pacific from Melbourne to Hong Kong (CX0104) on 13/9/16 and then on to Vancouver (CX0888) on 14/9/16. I would like to upgrade to Premium Economy preferably only on the Hong Kong to Vancouver leg, but am told by my Travel Agent that it is only possible to upgrade both segments and that the cost would be in excess of $2300. This sounds very excessive and is more than I can really afford. Is there any way that I can have this upgrade at a more reasonable cost? Is it perhaps possible to be put on a 'waitlist', if so how? I do not have Air Asia points, only just over 12000 Qantas frequent flyer points. Any advice would be greatly appreciated.