1. A method, comprising: collecting, by a system comprising a processor, call data during playing to callers of a prompt sequence, wherein the prompt sequence comprises a plurality of phrases, and wherein the call data comprises rates of caller events during individual phrases of the plurality of phrases; identifying, by the system, a particular one of the individual phrases based on the call data; collecting, by the system, other call data during playing to callers of an alternate prompt sequence comprising an alternative phrase replacing the particular one of the individual phrases, and wherein the other call data includes a rate of caller events during the alternative phrase; comparing, by the system, a rate of caller events during the particular one of the individual phrases with the rate of caller events during the alternative phrase to obtain a comparison; and replacing, by the system, the particular one of the individual phrases with the alternative phrase based on the comparison.