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: @AlamRahman today which can impact the signal, I'm afraid :-( Our engineers are working to have this resolved by this evening and you'll
This tweet contains emotions: 
fear, optimism, pessimism