diff --git a/src/interface.jl b/src/interface.jl
index 2ede604..da5979f 100644
--- a/src/interface.jl
+++ b/src/interface.jl
@@ -35,10 +35,11 @@ end
 
 @kwdef mutable struct agent
     availableRole=["system", "user", "assistant"]
+    agentName="assistant"
     maxUserMsg::Int= 10
-    llmAIRequestTopic_openblas = "llm/openblas/request"
-    llmAIRequestTopic_gpu = "llm/api/v0.0.1/gpu/request"
-    self_llmReceiveTopic = "chatbothub/llm/respond"
+    llmAIRequestMqttTopic_openblas= "llm/openblas/request"
+    llmAIRequestMqttTopic_gpu= "llm/api/v0.0.1/gpu/request"
+    self_llmReceiveMqttTopic= "chatbothub/llm/respond"
 
     """ Dict(Role=> Content)  ;   Role can be system, user, assistant
       Example:
@@ -49,7 +50,28 @@ end
               ]
     """
     # Ref: Chat prompt format https://huggingface.co/TheBloke/Llama-2-7B-Chat-GGML/discussions/3
-    messages=[Dict(:role=>"system", :content=> "You are a helpful assistant.", :timestamp=> Dates.now()),]
+    messages= [Dict(:role=>"system", :content=> "You are a helpful assistant.", :timestamp=> Dates.now()),]
+end
+
+function agent(
+  agentName::String,
+  systemMessage::String,  # system message of an agent
+  llmAIRequestMqttTopic_openblas::String,
+  llmAIRequestMqttTopic_gpu::String,
+  self_llmReceiveMqttTopic::String;
+  availableRole::AbstractArray=["system", "user", "assistant"],
+  maxUserMsg::Int=10)
+  
+  newAgent= agent()
+  newAgent.llmAIRequestMqttTopic_openblas= llmAIRequestMqttTopic_openblas
+  newAgent.llmAIRequestMqttTopic_gpu= llmAIRequestMqttTopic_gpu
+  newAgent.self_llmReceiveMqttTopic= self_llmReceiveMqttTopic
+  newAgent.availableRole= availableRole
+  newAgent.maxUserMsg= maxUserMsg
+  systemMessage= "Your name is $agentName. " * systemMessage
+  newAgent.messages=[Dict(:role=>"system", :content=> systemMessage, :timestamp=> Dates.now()),]
+
+  return newAgent
 end
 
 @kwdef mutable struct agentLangchain