Task: Classify the mental state of the tweeter based on the tweet, determining if it is 'neutral or no emotion' or characterized by any of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: @jkriv You're most welcome. Please check with us anytime you have a question or concern.
This tweet contains emotions: 
anticipation, joy, optimism, trust