Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: Serves it's purpose

This dish worked well for our Corgi when we flew her in a kennel for about 10 hours with a connecting flight from AZ to FL. The water was frozen overnight and when she arrived, she still had a lot left. The edges are rounded and keep the water in pretty well, and if she bumped into it it wouldn't hurt her. It was easy to attach and detach. For something so simple and basic, yet necessary, I was pleased with it.