Task: Classify the mental state of the tweeter based on the tweet, determining if it is 'neutral or no emotion' or characterized by any of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
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