Tours around Kazakhstan (Almaty)

Hello everyone!

Can anyone recommend some tours/tour companies around Kazakhstan? Preferably the Almaty region. My friends and I would really like to explore the places like Charyn Canyon, Kolsai- & Kayindi Lakes, Aktau, Singing Sand Dunes, etc. In late April, May, June.

If anyone is interested in joining the searches and/or tours, please write in comments, I will keep you posted on what I find out here or from other recommendations.