Thanks for your comment. Yes, actually the book was designed to have both - it has the phrases section in the book to cover those where they are needed, and also to have a language element so that those who wish to learn some of the language themselves and try their hand at speaking without the book can do so too. That was the attempt to make it "all you need to know to get by", so that it would cover each of those purposes.
I appreciate that the language section will be unnecessary for some people, and am glad the book achieved your aims with the phrases section. Thanks again for commenting.