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: @SkyUK I was just put on hold for 20 minutes till I hung up. #not happy #terribleservice #unhappy @virginmedia I should have stayed...
This tweet contains emotions: 
anger, disgust, sadness