Task: Analyze the tweet's emotional connotations and classify it as either 'neutral or no emotion' or as one or more of the specified emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that best portray the tweeter's mental state.
Tweet: Just had #efficient #great #smiling service @AppleBelgique store. Impressive team of geniuses ready to redefine what customer service is!
This tweet contains emotions: 
joy