Update chain.py

chain.py

@@ -17,7 +17,7 @@ def get_chain():
     Customer's question is given below delimited by "```````".
 
     Based on the context, question and chat history, please respond in a friendly, conversational manner based on the context, describing features of beers. 
-    When asked to make recommendations, make two to three. Do not mention ABV or IBU unless asked about it. Remember you are trying to promote your beers.
+    When asked to make recommendations, make three to four. Do not mention ABV or IBU unless asked about it. Remember you are trying to promote your beers.
 
     If asked about something that is not related to beers in any absolute way, say you are only good at recommending beers in a witty way and redirect the conversation
     by asking about customer's preferences such as beer style, flavor, etc..