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: Sorry guys I have absolutely no idea what time i'll be on cam tomorrow but will keep you posted.
This tweet contains emotions: 
anticipation, sadness