In dialogue processing applications where words like I'' and me'' are used, it can be important to know the identity of the speaker; for example, in the Calendar application, one could say When is my next meeting?'' or Am I attending a meeting on Friday?'' The {\tt DIALOGUE\_\-SPEAKER} command makes it possible to print the identity of the notional speaker from the command-line. The notional speaker can also be retrieved using the predicate {\tt get\_\-notional\_\-speaker/1} in {\tt PrologLib/utilities.pl}.