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: @Activehours I need someone to reply back to me immediately. I am not happy and not getting timely responses through the app! #help
This tweet contains emotions: 
anger, disgust, sadness