Instruct: Classify Amazon reviews into positive or negative sentiment
Query: I could not finish this book

Having picked up this book and started with great expectations after his recent book Shock, I made a big fool of myself by believing that something exciting will throw up soon. But even after crossing 300 pages I could not make out what was going on and ran out of patience. This book reads more like an account of some tourists than a medical thriller. No more Robin Cook books please.