Task: Determine the dominant emotion in the tweet and classify it as either 'neutral or no emotion' or one of the eleven provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: @Uber very disappointing that support has not responded to my email!! #bad #uber #service
This tweet contains emotions: 
anger, disgust, pessimism, sadness