Welcome to the CSC110 Book Recommender. Type the word in the
left column to do the action on the right.
recommend : recommend books for a particular user
best      : the book with the highest rating among all users
add       : add a new book
quit      : exit the program
next task? add
user? Percival
title? Ramona
author? Beverly Cleary
rating? 5
next task? quit