just trigger a condition to true or change a variable to 1,2,3,... if you spoke to them the first time. before dialog starts check the condition/variable and then depending of its state starta different dialog
You mean value
, but yeah... that's the way to go about it. If queries combined with conditions or values. If you are feeling adventurous then you could also have it return a random display text by using the set random value action part as the first action part in your action block, then you would add the if value = x queries as per usual.