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: Headed to MDW w/ layover in SLC. Got off for food. Wrong move. Bailed on my food &amp; barely made it. @SouthwestAir #WannaGetAway #Contest #sad
This tweet contains emotions: 
sadness