Task: Determine the prevailing emotional tone of the tweet, categorizing it as either 'neutral or no emotion' or as one or more of the given emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that most accurately represent 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