[Human]: Do you have a favorite Roald Dahl book?  [Assistant]: Certainly, Charlie and the chocolate Factory is one of my favorites. It's a speculative fiction book do you like speculative fiction [Human]: I liked Charlie and the Chocolate Factory. But it's be awhile since, I've read it. Would you recommend it for a 10 year old? 
Definitely, Roald Dahl's masterpiece "Matilda" is my favorite. It's a science fiction book, so it might not be suitable for a 10-year-old, but you should give it a try.