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: @matildaswish it's great to see Matilda so happy in her new chair it will provide her with access to lots of new experiences. #smiling
This tweet contains emotions: 
joy, optimism