I used this powerpoint for the conversation class with my Chinese students. So far they seem to like it. (14-45y.o).
The structure of powerpoint:
slide1: question to speculate
slide2: useful phrases (good sides of travelling)
slide3: useful phrases (bad sides of travelling)
slide4: a few questions about travelling to speculate
slide5: writing activity (but you can also just make them talk about it)