Task: Identify the primary emotion conveyed in the tweet and assign it to either 'neutral or no emotion' or one or more of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that best capture the tweeter's mental state.
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