Update inference example

README.md

@@ -33,12 +33,14 @@ widget:
       I am interested in developing a career in software engineering. What would you recommend me to do?<|im_end|>
       <|im_start|>assistant
   - text: |-
+      <|im_start|>system
+      You are a helpful assistant who provides concise responses.<|im_end|>
       <|im_start|>user
-      Hey! Got a question for you!<|im_end|>
+      Hi!<|im_end|>
       <|im_start|>assistant
-      Sure! What's it?<|im_end|>
+      Hello there! How may I help you?<|im_end|>
       <|im_start|>user
-      I'm planning to travel to the Bahamas! Can you give me some tips?<|im_end|>
+      I need to build a simple website. Where should I start learning about web development?<|im_end|>
       <|im_start|>assistant
   - text: |-
       <|im_start|>system