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: Your #smile is always yours, we make it as easy as possible for you to get the best orthodontic care no matter when you need it.
This tweet contains emotions: 
joy, optimism