diff --git a/examples/di/machine_learning.py b/examples/di/machine_learning.py
index a58735831..c674e66e8 100644
--- a/examples/di/machine_learning.py
+++ b/examples/di/machine_learning.py
@@ -2,11 +2,21 @@ import fire
 
 from metagpt.roles.di.data_interpreter import DataInterpreter
 
+WINE_REQ = "Run data analysis on sklearn Wine recognition dataset, include a plot, and train a model to predict wine class (20% as validation), and show validation accuracy."
 
-async def main(auto_run: bool = True):
-    requirement = "Run data analysis on sklearn Wine recognition dataset, include a plot, and train a model to predict wine class (20% as validation), and show validation accuracy."
-    di = DataInterpreter(auto_run=auto_run)
-    await di.run(requirement)
+DATA_DIR = "path/to/your/data"
+# sales_forecast data from https://www.kaggle.com/datasets/aslanahmedov/walmart-sales-forecast/data
+SALES_FORECAST_REQ = f"""Train a model to predict sales for each department in every store (split the last 40 weeks records as validation dataset, the others is train dataset), include plot total sales trends, print metric and plot scatter plots of
+groud truth and predictions on validation data. Dataset is {DATA_DIR}/train.csv, the metric is weighted mean absolute error (WMAE) for test data. Notice: *print* key variables to get more information for next task step.
+"""
+
+REQUIREMENTS = {"wine": WINE_REQ, "sales_forecast": SALES_FORECAST_REQ}
+
+
+async def main(use_case: str = "wine"):
+    mi = DataInterpreter()
+    requirement = REQUIREMENTS[use_case]
+    await mi.run(requirement)
 
 
 if __name__ == "__main__":