diff --git a/main.go b/main.go
index 324d6a6..2c33eb8 100644
--- a/main.go
+++ b/main.go
@@ -28,18 +28,52 @@ func (p *OpenAIPrompter) Prompt(ctx context.Context, req PromptRequest) (*Highly
 	p.log.Info("new prompt request",
 		"req", req)
 
-	instructions := p.cfg.SystemPrompt
-	if req.OriginalPostContent != nil {
-		instructions += fmt.Sprintf("\nThis is the channel post that user is mentioning: %s", *req.OriginalPostContent)
+	input := []responses.ResponseInputItemUnionParam{
+		{
+			OfMessage: &responses.EasyInputMessageParam{
+				Content: responses.EasyInputMessageContentUnionParam{
+					OfString: openai.String(p.cfg.SystemPrompt),
+				},
+				Role: responses.EasyInputMessageRoleSystem,
+			},
+		},
+		{
+			OfMessage: &responses.EasyInputMessageParam{
+				Content: responses.EasyInputMessageContentUnionParam{
+					OfString: openai.String("Пользователя зовут " + req.Username),
+				},
+				Role: responses.EasyInputMessageRoleSystem,
+			},
+		},
+		{
+			OfMessage: &responses.EasyInputMessageParam{
+				Content: responses.EasyInputMessageContentUnionParam{
+					OfString: openai.String(req.Question),
+				},
+				Role: responses.EasyInputMessageRoleUser,
+			},
+		},
 	}
 
-	prompt := fmt.Sprintf("<system>%v</system> user %v asks: %v", instructions, req.Username, req.Question)
-	p.log.Info("resulting prompt", "prompt", prompt)
+	if req.OriginalPostContent != nil {
+		message := "Пользователь может ссылаться на текст поста, который он комментирует. Вот он: " +
+			*req.OriginalPostContent
+
+		input = append(input, responses.ResponseInputItemUnionParam{
+			OfMessage: &responses.EasyInputMessageParam{
+				Content: responses.EasyInputMessageContentUnionParam{
+					OfString: openai.String(message),
+				},
+				Role: responses.EasyInputMessageRoleDeveloper,
+				Type: responses.EasyInputMessageTypeMessage,
+			},
+		})
+	}
 
 	resp, err := p.cli.Responses.New(ctx, responses.ResponseNewParams{
 		Instructions: openai.String(p.cfg.SystemPrompt),
 		Input: responses.ResponseNewParamsInputUnion{
-			OfString: openai.String(prompt),
+			OfInputItemList: input,
 		},
 		Reasoning: shared.ReasoningParam{
 			Effort: shared.ReasoningEffortXhigh,