Analyze 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 indicate which emotions from the list (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) are expressed. If no emotions are found, answer with "neutral or no emotion".
anticipation, optimism, sadness, trust