In situations where you want callers to respond with spoken input, instruct them to say "yes" or "no," rather than a number. Callers find this natural, and make fewer mistakes than if you ask them to say a number meaning yes or no. For example:
Instead of prompting... |
prompt... |
"If this is correct, say 1. If it is not correct, say 2." |
"Is this correct? Please say yes or no, now. |
Write your yes/no questions similarly throughout the application, so that callers will know what to expect.
Recognizing "yes" and "no" is best done with WholeWord speech recognition.