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: @DefiantSagacity — Hermione in a sort of thank you before sliding his own plate away from him before frowning at Ron as he continued to —
This tweet contains emotions: 
joy