diff --git a/src/interface.jl b/src/interface.jl
index 79bc7c1..d19b59a 100644
--- a/src/interface.jl
+++ b/src/interface.jl
@@ -470,6 +470,7 @@ function evaluator(a::T1, timeline, decisiondict, evaluateecontext
   <You should follow the following guidelines>
     - The trainee's plan, actionname, and actioninput must be logically consistent
     - The trainee's actioninput should be in a proper format as specified by the tools.
+    - The trainee's action name and action input should make sense. For example, if the trainee isn't finished talking, he shouldn't use the ENDCONVERSATION tool.
   </You should follow the following guidelines>
   <You should then respond to the user with>
     1) trajectory_evaluation: Analyze the trajectory of a solution to answer the user's original question.