diff --git a/src/interface.jl b/src/interface.jl
index 4db08d5..9f35dd9 100644
--- a/src/interface.jl
+++ b/src/interface.jl
@@ -13,11 +13,28 @@ using JSON3, DataStructures
     sessionId::Int= 1
     maxConversation::Int= 10
 
+    """ Dict(Role=> Content)  ;   Role can be system, user, assistant
+      Example:
+        messages=[
+              Dict(:role=>"system", :content=> "You are a helpful assistant."),
+              Dict(:role=>"assistant", :content=> "How may I help you"),
+              Dict(:role=>"user", :content=> "Hello, how are you"),
+              ]
+    """
     # Ref: https://huggingface.co/TheBloke/Llama-2-7B-Chat-GGML/discussions/3
-    # {Role=> Content}  ;   Role can be system, user, assistant
-    messages::OrderedDict= OrderedDict(
-      :system=> "You are a helpful assistant.",
-    )
+    # 
+    messages=[Dict(:role=>"system", :content=> "You are a helpful assistant."),]
+end
+
+function addNewMessage(a::agent, role::String, content::String)
+  d = Dict(:role=> role, :content=> content)
+  push!(a.messages, d)
+end
+
+function clearMessage(a::agent)
+  for i in eachindex(a.messages)
+    pop!(a.messages)
+  end
 end
 
 
@@ -72,21 +89,6 @@ end
 
 
 
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