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: @jade0208 unfortunately the diet is still on, so they will have to wait till Friday I'm afraid.
This tweet contains emotions: 
fear, sadness