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: @Delta.  Are you kidding?  Delayed from 7:30pm to 11:00 - only to cancel it because the pilot is overtime.
This tweet contains emotions: 
anger, disgust, sadness