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: Hello my dear friends, I will be back online this Friday night. I miss you! #sober #sobriety #recovery
This tweet contains emotions: 
joy, optimism, sadness