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: @airvistara as always it was indeed a wonderful experience flying with you guys today #bestinbusiness #delight #happyme
This tweet contains emotions: 
joy, optimism, surprise, trust