new_contents: 
  from .examples import load_email_client
  from ..policy import MDPDialogBuilder
  from ..util import simulate_dialog, cross_validation
  
  
  EMAIL_CLIENT = load_email_client()
  
  
  def test_simulate_dialog():
      builder = MDPDialogBuilder(
          config_sample=EMAIL_CLIENT.config_sample,
          assoc_rule_min_support=EMAIL_CLIENT.min_support,
          assoc_rule_min_confidence=EMAIL_CLIENT.min_confidence)
      dialog = builder.build_dialog()
      accuracy, questions = simulate_dialog(dialog, EMAIL_CLIENT.config)
      assert accuracy == 1.0
      assert questions == 0.5
  
subject: Add a test for simulate_dialog