Task: Analyze the tweet's emotional connotations 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 best portray the tweeter's mental state.
Tweet: @united horrible service. EWR. Not a cloud in the sky. Normal departure at 10am now leaving at 5pm. Crappy #UnitedAirlines
This tweet contains emotions: 
anger, disgust