Błędnie: Of course, you'll find this mini- conversation book helpful when you're in France but remember it's not designed for people, who want to learn a language. Poprawnie: Of course, you'll find this phrase book helpful when you're in France but remember it's not designed for people, who want to learn a language.
"Rozmówki" (książeczki zawierające podstawowe zwroty obcojęzyczne) to po angielsku 'phrase book'.