diff --git a/llmage/init.py b/llmage/init.py
index 4a756db..aef56ae 100644
--- a/llmage/init.py
+++ b/llmage/init.py
@@ -1,5 +1,12 @@
-from llmage.llmclient import get_llm, inference, get_llmcatelogs, \
-	get_llms_by_catelog
+from llmage.llmclient import (
+	get_llm, 
+	inference, 
+	get_llmcatelogs,
+	get_llms_by_catelog,
+	default_sysmessage,
+	default_usrmessage,
+	default_llmmessage
+)
 from ahserver.serverenv import ServerEnv
 
 def load_llmage():
@@ -8,4 +15,7 @@ def load_llmage():
 	env.inference = inference
 	env.get_llms_by_catelog = get_llms_by_catelog
 	env.get_llmcatelogs = get_llmcatelogs
+	env.default_sysmessage = default_sysmessage
+	env.default_usrmessage = default_usrmessage
+	env.default_llmmessage = default_llmmessage
 
diff --git a/llmage/llmclient.py b/llmage/llmclient.py
index f78f654..a50127f 100644
--- a/llmage/llmclient.py
+++ b/llmage/llmclient.py
@@ -4,6 +4,24 @@ from appPublic.log import debug, exception
 from uapi.appapi import UAPI, sor_get_callerid, sor_get_uapi
 from ahserver.serverenv import get_serverenv
 
+def default_sysmessage():
+	return """{
+		"role":"system",
+		"content":"{{content}}"
+	}"""
+
+def default_usrmessage():
+	return """{
+		"role":"user",
+		"content":"{{content}}"
+	}
+
+def default_llmmessage():
+	return """{
+		"role":"assisant",
+		"content":"{{content}}"
+	}"""
+
 async def get_llmcatelogs():
 	db = DBPools()
 	dbname = get_serverenv('get_module_dbname')('llmage')
diff --git a/wwwroot/llm_dialog.ui b/wwwroot/llm_dialog.ui
index 5bb9eea..9364580 100644
--- a/wwwroot/llm_dialog.ui
+++ b/wwwroot/llm_dialog.ui
@@ -15,9 +15,9 @@
 				"modeltypeid":"{{llm.catelogid}}",
 				"output_view":{{llm.output_view}},
 				"input_from":"userinput",
-				"system_message_format":{{llm.system_message}},
-				"user_message_format":{{llm.user_message}},
-				"llm_message_format":{{llm.assisant_message}},
+				"system_message_format":{{llm.system_message or default_sysmessage()}},
+				"user_message_format":{{llm.user_message or default_usrmessage()}},
+				"llm_message_format":{{llm.assisant_message or default_llmmessage()}},
 				"icon":"{{entire_url('/appbase/get_icon.dspy')}}?id={{llm.iconid}}",
 				"url":"{{entire_url('/llmage/llminference.dspy')}}",
 				"model":"{{llm.model}}",