Task: Categorize the tweet's emotional expression, classifying it as either 'neutral or no emotion' or as one or more of the specified emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that reflect the tweeter's state of mind.
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