diff --git a/llm-rag-with-langchain4j-spring-boot/src/main/java/com/learning/ai/LLMRagWithSpringBoot.java b/llm-rag-with-langchain4j-spring-boot/src/main/java/com/learning/ai/LLMRagWithSpringBoot.java
index b3ca12d..8b824b8 100644
--- a/llm-rag-with-langchain4j-spring-boot/src/main/java/com/learning/ai/LLMRagWithSpringBoot.java
+++ b/llm-rag-with-langchain4j-spring-boot/src/main/java/com/learning/ai/LLMRagWithSpringBoot.java
@@ -1,6 +1,6 @@
 package com.learning.ai;
 
-import com.learning.ai.config.CustomerSupportAgent;
+import com.learning.ai.config.AICustomerSupportAgent;
 import java.util.Map;
 import org.springframework.boot.ApplicationRunner;
 import org.springframework.boot.SpringApplication;
@@ -15,7 +15,7 @@ public static void main(String[] args) {
     }
 
     @Bean
-    ApplicationRunner interactiveChatRunner(CustomerSupportAgent agent) {
+    ApplicationRunner interactiveChatRunner(AICustomerSupportAgent agent) {
         return args -> {
             var response =
                     agent.chat("what should I know about the transition to consumer direct care network washington?");
diff --git a/llm-rag-with-langchain4j-spring-boot/src/main/java/com/learning/ai/config/AIConfig.java b/llm-rag-with-langchain4j-spring-boot/src/main/java/com/learning/ai/config/AIConfig.java
index b544d58..70ce611 100644
--- a/llm-rag-with-langchain4j-spring-boot/src/main/java/com/learning/ai/config/AIConfig.java
+++ b/llm-rag-with-langchain4j-spring-boot/src/main/java/com/learning/ai/config/AIConfig.java
@@ -32,11 +32,11 @@
 public class AIConfig {
 
     @Bean
-    CustomerSupportAgent customerSupportAgent(
+    AICustomerSupportAgent customerSupportAgent(
             ChatLanguageModel chatLanguageModel,
             //                                              ChatTools bookingTools,
             ContentRetriever contentRetriever) {
-        return AiServices.builder(CustomerSupportAgent.class)
+        return AiServices.builder(AICustomerSupportAgent.class)
                 .chatLanguageModel(chatLanguageModel)
                 .chatMemory(MessageWindowChatMemory.withMaxMessages(20))
                 //                .tools(bookingTools)
diff --git a/llm-rag-with-langchain4j-spring-boot/src/main/java/com/learning/ai/config/CustomerSupportAgent.java b/llm-rag-with-langchain4j-spring-boot/src/main/java/com/learning/ai/config/AICustomerSupportAgent.java
similarity index 87%
rename from llm-rag-with-langchain4j-spring-boot/src/main/java/com/learning/ai/config/CustomerSupportAgent.java
rename to llm-rag-with-langchain4j-spring-boot/src/main/java/com/learning/ai/config/AICustomerSupportAgent.java
index a9f8f12..abcc982 100644
--- a/llm-rag-with-langchain4j-spring-boot/src/main/java/com/learning/ai/config/CustomerSupportAgent.java
+++ b/llm-rag-with-langchain4j-spring-boot/src/main/java/com/learning/ai/config/AICustomerSupportAgent.java
@@ -1,8 +1,9 @@
 package com.learning.ai.config;
 
 import dev.langchain4j.service.SystemMessage;
+import dev.langchain4j.service.V;
 
-public interface CustomerSupportAgent {
+public interface AICustomerSupportAgent {
 
     @SystemMessage({
         """
@@ -19,5 +20,5 @@ public interface CustomerSupportAgent {
              {documents}
              """
     })
-    String chat(String documents);
+    String chat(@V("documents") String documents);
 }