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: @escotony sorry to hear about your experience, however, please do not hesitate to contact us via live chat or email at askdysonUS@dyson.com
This tweet contains emotions: 
anticipation, optimism, sadness