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: I click on download on my PC. Message says 'Thank you for downloading #iTunes \nSo, where's the download?! #frustrated
This tweet contains emotions: 