Task: Classify the mental state of the tweeter based on the tweet, determining if it is 'neutral or no emotion' or characterized by any of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: I really love the customer service @LifeProof they're always so nice, helpful and cheerful !
This tweet contains emotions: 
joy, love, optimism