public bool?RecognizeEntity(IMessageActivity messageActivity)
{
var yesKey = PromptDialog.PromptConfirm.Yes.ToString(CultureInfo.InvariantCulture);
var noKey = PromptDialog.PromptConfirm.No.ToString(CultureInfo.InvariantCulture);
var choices = new Dictionary <string, IReadOnlyList <string> >
{
{
yesKey,
this.patterns[PromptDialog.PromptConfirm.Yes].Select(x => x.ToLowerInvariant())
.ToList()
},
{
noKey,
this.patterns[PromptDialog.PromptConfirm.No].Select(x => x.ToLowerInvariant())
.ToList()
}
};
var promptRecognizer = new PromptRecognizer();
var entityMatches = promptRecognizer.RecognizeChoices(messageActivity, choices);
var entityWinner = entityMatches.MaxBy(x => x.Score) ?? new RecognizeEntity <string>();
return(entityWinner.Entity == yesKey
? true
: (entityWinner.Entity == noKey
? (bool?)false
: null));
}