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: What a sad day...1st day of Fall...I don't dislike Fall...I just LOVE Summer #FirstDayofFall #goodbyesummer #sadness #bathingsuitsforever
This tweet contains emotions: 
pessimism, sadness