Task: Classify the mental state of the tweeter based on the tweet, determining if it is 'neutral or no emotion' or characterized by any of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: Well I won't be doing a unboxing of the iPhone 7 plus on my channel until November sadly. Thank you @TMobile @Apple Staten Island NY smh
This tweet contains emotions: 
pessimism, sadness