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: Enter this code for 10 free Lyfts PARX #Isn't it great to save money when you shop? #blissful #FREECAB
This tweet contains emotions: 
joy, optimism