Task: Evaluate the tweet for emotional cues and classify it as either 'neutral or no emotion' or as one or more of the specified emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that indicate the tweeter's state of mind.
Tweet: @GOtvNg CN seems like you only appreciate good reviews. No apologies to my concern years ago.
This tweet contains emotions: 
joy, optimism, sadness