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: @lebara - worst possible decision I could have made when arriving in the UK. Shocking service. Poor coverage. #unhappy
This tweet contains emotions: 
anger, disgust, fear, sadness