creating AIML for chatbot to ask questions - artificial-intelligence

Question

I am creating AIML file for Program-O chatbot and facing a problem.
What I want to do is ask question after question sequentially. Moreover, the questions should be in random order. It is satisfaction assessment test for students and I am experimenting to develop by using chatbot instead of traditional methods.
This is the AIML format I have in mind.
sample.aiml
<category>
<pattern>HELLO<bot/></pattern>
<template>
<random>
<li><warm/>Hello there. Do you want to talk about your campus life?</li>
<li><happy/>Hi. Do you want to talk about your campus life?</li>
<li><happy/>Goodday. Do you want to talk about your campus life?</li>
</random>
</template>
</category>
<category>
<pattern>*</pattern>
<that>HELLO THERE. DO YOU WANT TO TALK ABOUT CAMPUS LIFE</that>
<template>
<random>
<li>How were the classes?</li>
<li>Does the teacher give a clear answer?</li>
<li>Was the teacher come on time?</li>
</random>
</template>
</category>
<category>
<pattern>*</pattern>
<that>HOW WERE THE CLASSES</that>
<template>
<random>
<li>Does the teacher give the full and clear explanation?</li>
<li>What about the material used in the classes?</li>
<li>What do you think about the courses content?</li>
</random>
</template>
</category>
The problem is that *(asterisk) wildcard is not working well with that predicate.
Is there any other way to construct the AIML which fulfill my requirement?

Answer 1

Use the underscore wildcard. In AIML, there are two wildcards - * and _. The underscore wildcard has higher priority then the asterisk.

Answer 2

string text = System.IO.File.ReadAllText(txt_filename.Text.ToString()).ToString();
int length = (Int32)text.Length;
txt_gbox.Text = length.ToString();
LexicalAnalysis analyzer = new LexicalAnalysis();
while (text !=)
{
text = text.Trim(' ', '\t');
string token = analyzer.GetNextLexicalAtom(ref text);
txt_gbox.Text = token;
}
I want to show these token in richtextbox which is txt_gbox but on while loop programe stop....