1. A method for determining whether to conduct a follow-up action with a party based on predicting an outcome for the follow-up action with the party, the method comprising: applying a first classifier model to one or more voice characteristics extracted from a voice sample of the party by at least one computer processor to provide a first predicted outcome of whether the follow-up action with the party will result in an event of interest occurring; applying a second classifier model to a set of words spoken by the party in the voice sample by the at least one computer processor to provide a second predicted outcome of whether the follow-up action with the party will result in the event of interest occurring; determining by the at least one computer processor whether the first predicted outcome and the second predicted outcome match; in response to the first predicted outcome and the second predicted outcome matching, predicting the outcome to the follow-up action with the party as being the first predicted outcome; and conducting the follow-up action with the party in response to predicting the outcome to the follow-up action with the party will result in the event of interest occurring.