Task: Categorize the tweet's emotional expression, classifying it as either 'neutral or no emotion' or as one or more of the specified emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that reflect the tweeter's state of mind.
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