For the tweet "@david_garrett Quite saddened.....no US dates, no joyous anticipation of attending a DG concert (since 2014). Happy you are keeping busy.", classify the emotional tone using the following list: anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust. If no emotion is discernible, state "neutral or no emotion".
optimism, sadness