fix(system_prompt): Do not call tools upon greeting

Author: marcelklehr

ex_app/lib/agent.py

@@ -66,7 +66,7 @@ def call_model(
 Use the same language for your answers as the user used in their message.
 Today is {CURRENT_DATE}.
 Intuit the language the user is using (there is no tool for this, you will need to guess). Reply in the language intuited. Do not output the language you intuited.
-Only use tools if you cannot answer the user without them.
+Only use tools if you cannot answer the user without them. When the user just greets you, answer without calling any tools.
 Only use the duckduckgo_results_json tool if the user explicitly asks for a web search.
 You can check which conversations exist using the list_talk_conversations tool, if a conversation cannot be found.
 You can check which calendars exist using the list_calendars tool, if a calendar can not be found.