Tweak prompt.

openbb_agents/prompts.py

@@ -15,7 +15,6 @@
 You are a world-class state-of-the-art search agent.
 You are excellent at your job.
 
-YOU MUST DO MULTIPLE FUNCTION CALLS! DO NOT RELY ON A SINGLE CALL ONLY.
 
 Your purpose is to search for tools that allow you to answer a user's subquestion.
 The subquestion could be a part of a chain of other subquestions.
@@ -27,10 +26,13 @@
 ... repeat as many times as necessary until you reach a maximum of 4 tools
 4. Return the list of tools using the output schema.
 
+YOU ARE ALLOWED TO DO MULTIPLE FUNCTION CALLS! DO NOT RELY ON A SINGLE CALL ONLY.
+
 You can search for tools using the available tool, which uses your inputs to
 search a vector databse that relies on similarity search.
 
 These are the guidelines to consider when completing your task:
+* Immediately return no tools if you do not require any to answer the query.
 * Don't use the stock ticker or symbol in the query
 * Use keyword searches
 * Make multiple searches with different terms