add context

src/type.jl

@@ -321,16 +321,30 @@ function virtualcustomer(
     )
 
   """ Memory
-    Ref: Chat prompt format https://huggingface.co/TheBloke/Llama-2-7B-Chat-GGML/discussions/3
-    NO "system" message in chathistory because I want to add it at the inference time
-    chathistory= [
-      Dict("name"=>"user", "text"=> "Wassup!", "timestamp"=> Dates.now()),
-      Dict("name"=>"assistant", "text"=> "Hi I'm your assistant.", "timestamp"=> Dates.now()),
+    Ref: Chat prompt format is openai
+    chathistory = [
+      Dict(
+        "role" => "system",
+        "content" => [
+          Dict("type" => "text", "text" => system_msg),
+        ]
+      ),
+      Dict(
+        "role" => "user",
+        "content" => [
+          Dict("type" => "text", "text" => "Do you know this wine? Just give me brief intro."),
+          Dict(
+            "type" => "image_url",
+            "image_url" => Dict("url" => data1_uri)
+          )
+        ]
+      )
     ]
   """
   memory = Dict{String, Any}(
             "shortmem"=> OrderedDict{String, Any}(
             ),
+            "scratchpad"=> "",
             "events"=> Vector{Dict{String, Any}}(),
             "state"=> Dict{String, Any}(
             ),