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