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: @vInZzzY we regret the inconvenience caused. We have noted your concern. We will get in touch with you soon to discuss. Rgds, Abhijit
This tweet contains emotions: 
anticipation, optimism, sadness