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: @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