Listing 1
<aiml version="1.0">
<category>
<pattern>*</pattern>
<template>
<srai>HELLO</srai>
</template>
</category>

<category>
<pattern>HELLO</pattern>
<template>
Greetings <get_name>user</get_name>!
<srai>HELLO WORLD</srai>
</template>
</category>

<category>
<pattern>HELLO WORLD</pattern>
<template>
Hello world!
</template>
</category>

</aiml>