diff --git a/api/controllers/console/app/conversation.py b/api/controllers/console/app/conversation.py
index b35b31449d..fdca10f94a 100644
--- a/api/controllers/console/app/conversation.py
+++ b/api/controllers/console/app/conversation.py
@@ -95,7 +95,7 @@ class CompletionConversationApi(Resource):
         'status': fields.String,
         'from_source': fields.String,
         'from_end_user_id': fields.String,
-        'from_end_user_session_id': fields.String(attribute='end_user.session_id'),
+        'from_end_user_session_id': fields.String(),
         'from_account_id': fields.String,
         'read_at': TimestampField,
         'created_at': TimestampField,
@@ -136,8 +136,6 @@ class CompletionConversationApi(Resource):
 
         query = db.select(Conversation).where(Conversation.app_id == app.id, Conversation.mode == 'completion')
 
-        query = query.options(joinedload(Conversation.end_user))
-
         if args['keyword']:
             query = query.join(
                 Message, Message.conversation_id == Conversation.id