6. The method of claim 5 , wherein if the second threshold is not exceeded, further dialog is conducted with the user using an adapted dialog strategy.
5. The method of claim 1 , wherein the probability threshold is a first threshold, the method further comprising: determining whether a probability of conducting a successful dialog with the user exceeds a second threshold, the second threshold being greater than the probability threshold, wherein if the second threshold is exceeded, further dialog is conducted with the user using a current dialog strategy.