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: @wowairsupport it world be great if the live support was actually helpful #nightmare
This tweet contains emotions: 
fear, pessimism