Task: Analyze the tweet's emotional connotations and classify 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 best portray the tweeter's mental state.
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