Task: Assess the emotional content of the tweet and classify it as either 'neutral or no emotion' or as one or more of the given emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that best represent the tweeter's mental state.
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