Hi assiak,
Just stumbled upon your post and think I can offer you some help with practicing conversation in High-German. It's not my mother tongue (which is Russian by the way), but I think my German is pretty fluent.
It would be a nice opportunity for me to improve my English skills as well
Let me know, if you're interested...
I live in Aargau, not far from Zürich.
Cheers,
Juri.