code: def pd_entry_point_dfs():
      cards_df = pd.DataFrame({"id": [1, 2, 3, 4, 5]})
      transactions_df = pd.DataFrame(
          {
              "id": [1, 2, 3, 4, 5, 6],
              "card_id": [1, 2, 1, 3, 4, 5],
              "transaction_time": [10, 12, 13, 20, 21, 20],
              "fraud": [True, False, True, False, True, True],
          },
      )
      return cards_df, transactions_df
  
file_path: featuretools/featuretools/tests/utils_tests/test_entry_point.py
imports: import pandas
  import pytest
  from featuretools import dfs
label_desc: Use image node_id 1 for calling a global function with example usage: pd_entry_point_dfs() and returns: cards_df,  transactions_df