A 40 year old primiparous woman suspected to be suffering from endometriosis is subjected to diagnostic laparoscopy. Findings indicate - Uterus normal, both the ovaries show presence of chocolate cysts; endometriotic deposits are seen on the round ligament right side, both the fallopian tubes and the pouch of Douglas; moderately dens adhesions are present between the fallopian tubes and the pouch of Douglas. The treatment of choice in this case is :