Task: Determine the prevailing emotional tone of the tweet, categorizing 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 most accurately represent the tweeter's mental state.
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