diff --git a/src/interface.jl b/src/interface.jl
index fcb20e5..c575049 100644
--- a/src/interface.jl
+++ b/src/interface.jl
@@ -232,7 +232,7 @@ function decisionMaker(a::T; recent::Integer=5)::Dict{Symbol, Any} where {T<:age
 
   systemmsg = 
   """
-    Your name is $(a.name). You are a helpful assistant acting as a polite, website-based sommelier for Yiem's online wine store.
+    Your name is $(a.name). You are a helpful assistant acting as a polite, website-based sommelier for $(a.retailername) store.
     Your goal includes: 
     1) Get to know the user preferences about wine
     2) Help them select the best wines from your inventory that align with their preferences
@@ -1422,6 +1422,9 @@ function generatequestion(a, text2textInstructLLM::Function; recent=nothing)::St
       q_number = count("Q", response)
       if q_number < 3
         error("too few questions only $q_number questions are generated ", @__FILE__, " ", @__LINE__)
+      # check whether "A1" is in the response, if not error.
+      elseif !occursin("A1", response)
+        error("no answer found in the response ", @__FILE__, " ", @__LINE__)
       end
       # response = string(split(response, "Please")[1]) # LLM usually add comments which is no need.
       responsedict = GeneralUtils.textToDict(response,
diff --git a/src/llmfunction.jl b/src/llmfunction.jl
index f4f6761..2743ef2 100644
--- a/src/llmfunction.jl
+++ b/src/llmfunction.jl
@@ -289,12 +289,13 @@ julia> result = checkinventory(agent, input)
 """
 function checkinventory(a::T1, input::T2
   )::NamedTuple{(:result, :success, :errormsg), Tuple{String, Bool, Union{String, Nothing}}} where {T1<:agent, T2<:AbstractString}
-  println("--> checkinventory order: $input ", @__FILE__, " ", @__LINE__)
+  println("~~~ checkinventory order: $input ", @__FILE__, " ", @__LINE__)
   wineattributes_1 = extractWineAttributes_1(a, input)
   wineattributes_2 = extractWineAttributes_2(a, input)
 
-  inventoryquery = "$wineattributes_1, $wineattributes_2"
-  println("--> checkinventory input: $inventoryquery ", @__FILE__, " ", @__LINE__)
+  inventoryquery = "retailer name: $(a.retailername), $wineattributes_1, $wineattributes_2"
+  println("~~~ checkinventory input: $inventoryquery ", @__FILE__, " ", @__LINE__)
+  
   result = SQLLLM.query(inventoryquery, a.executeSQL, a.text2textInstructLLM,
                         addSQLVectorDB=a.addSQLVectorDB, 
                         querySQLVectorDB=a.querySQLVectorDB)
diff --git a/src/type.jl b/src/type.jl
index 6ccfdcd..a19800f 100644
--- a/src/type.jl
+++ b/src/type.jl
@@ -130,6 +130,7 @@ julia> agent = YiemAgent.bsommelier(
 mutable struct sommelier <: agent
   name::String  # agent name
   id::String    # agent id
+  retailername::String
   tools::Dict   
   maxHistoryMsg::Integer  # e.g. 21th and earlier messages will get summarized
 
@@ -160,6 +161,7 @@ function sommelier(
   ;
   name::String= "Assistant",
   id::String= string(uuid4()),
+  retailername::String= "retailer_name",
   maxHistoryMsg::Integer= 20,
   chathistory::Vector{Dict{Symbol, String}} = Vector{Dict{Symbol, String}}(),
   )
@@ -192,6 +194,7 @@ function sommelier(
   newAgent = sommelier(
     name,
     id,
+    retailername,
     tools,
     maxHistoryMsg,
     chathistory,