Task: Determine the prevailing emotional tone of the tweet, categorizing it as either 'neutral or no emotion' or as one or more of the given emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that most accurately represent the tweeter's mental state.
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