Task: Classify the mental state of the tweeter based on the tweet, determining if it is 'neutral or no emotion' or characterized by any of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: United Airline at Newark needs more Kiosks so that people won't miss their cut off time.  And hire more ppl too.  #horrible
This tweet contains emotions: 
anger, disgust