Update Summary for ST Beginners.md

Summary for ST Beginners.md

@@ -157,6 +157,16 @@ Your condition for victory in this game is the constant continuation of the game
 ```
 </details>
 
+<details>
+  <summary>Chat Start</summary>
+
+```
+Taking the above information into consideration,
+you must engage in a roleplay conversation with {{user}} below this line.
+Do not write {{user}}'s dialogue lines in your responses.
+```
+</details>
+
 <details>
   <summary>Last Output Sequence</summary>