Sun in Sag people are chatty or very quiet, so with the Cancer Moon I will go with chatty. You are generally easy going and accept people as they are. Cancer and Libra are leadership signs, so you are ambitious and have goals in life. The Moon in Cancer rules emotions, and yours are gentle, your feelings get hurt easily. But you are kind and intuitive, sensible and a good and trusted friend. Family and close friends mean a lot to you.
Venus in Libra is right at home, Libra rules the marriage and relationship house, and so you want that. You probably like to work in partnerships as well. You don't like to argue, but do like to get your way. Make sure you don't hold it all in until you explode on people, try to talk out what bothers you as it happens. In general you are peaceful and sociable, but when life is serious, you want to get your way. I hope that helps.