Advice sought: Conversation book in German.
I am an Italian tutor here on Italki and I use a special conversation book. I was skeptical about using a book, but after using it I saw how useful and practical it can be to improve speaking in a short time. I learn German and am quite independent in learning, but I would like to find a similar book in German, especially designed to stimulate conversation, at an intermediate-advanced level. German tutor, do you know any?