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: @xiankiefer @TheLincoln Book 5! It's so sprightly &amp; fun cuz he'd been reinvigorated by the Harry Potter series. I'm not kidding.
This tweet contains emotions: 
joy, optimism