Examine the tweet "@pandaflo22 We are sadden by this because we always strive to bring the best service to our customer. We will always be here for you. CM" and determine which of these emotions are present: anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust. If there are no identifiable emotions, reply with "neutral or no emotion".
anticipation, optimism, sadness, trust