Task: Identify the primary emotion conveyed in the tweet and assign it to either 'neutral or no emotion' or one or more of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that best capture the tweeter's mental state.
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