Task: Identify the primary emotion conveyed in the tweet and assign it to either 'neutral or no emotion' or one or more of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that best capture the tweeter's mental state.
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