My air conditioning nightmare.2000 Grand caravan

Chrysler calls it the H valve i think.

Guys the line is still leaking so Im choosing to not run the ac for now. I phoned Chrysler and the only way I can buy those lines is to get both. They are $317 my cost (slight discount). Im wondering if I can fit a new section of line in and what sort of fittings would hold the pressure in rather than replace the entire lines. I do have aluminum fuel line handy. Would flare nut fittings work for connecting the patch? Or should I just replace both lines?