Task: Categorize the tweet's emotional tone as either 'neutral or no emotion' or identify the presence of one or more of the given emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: @flybe Doesn't explain the ability to land at Manchester but not Bradford - other than more convenient for Flybe. Many unhappy travelers
This tweet contains emotions: 
pessimism, sadness