Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Excellent service

I am fully satisfied of my purchase. It couldn't have been better. In fact, the book was delivered to me well before the provisional date initially mentioned. The packaging was done professionally. I fully recommend Amazon.com to every people in doubt. I bought a new book and it seemed to me as if it has just been delivered by the publisher. Thank you Amazon.com. A bientot.