import dialogflow_v2 as dialogflow
session_client = dialogflow.SessionsClient()
session = session_client.session_path(project_id, session_id)
text_input = dialogflow.types.TextInput(text=text, language_code=language_code)
query_input = dialogflow.types.QueryInput(text=text_input)
response = session_client.detect_intent(session=session, query_input=query_input)

query_result {
  query_text: "testing testing 123 abc@gmail.com"
  action: "test"
  parameters {
    fields {
      key: "email"
      value {
        string_value: "abc@gmail.com"
      }
    }
    fields {
      key: "number-integer"
      value {
        list_value {
          values {
            number_value: 123.0
          }
        }
      }
    }
  }
  all_required_params_present: true
  fulfillment_text: "testing invoked"
  fulfillment_messages {
    text {
      text: "testing invoked"
    }
  }
  output_contexts {
    name: "projects/*****/agent/sessions/session-test/contexts/testing-context"
    lifespan_count: 5
    parameters {
      fields {
        key: "email"
        value {
          string_value: "abc@gmail.com"
        }
      }
      fields {
        key: "email.original"
        value {
          string_value: "abc@gmail.com"
        }
      }
      fields {
        key: "number-integer"
        value {
          list_value {
            values {
              number_value: 123.0
            }
          }
        }
      }
      fields {
        key: "number-integer.original"
        value {
          string_value: "123"
        }
      }
    }
  }
  intent {
    name: "projects/*****/agent/intents/*****"
    display_name: "test"
  }
  intent_detection_confidence: 1.0
  language_code: "en"
}

Query Result Type : type(response) --> <class 'google.cloud.dialogflow_v2.types.DetectIntentResponse'>
Query text : response.query_result.query_text --> testing testing 123 abc@gmail.com
Detected intent : response.query_result.intent.display_name --> test
Fulfillment text : response.query_result.fulfillment_text --> testing invoked
Parameters : response.query_result.parameters --> fields {
  key: "email"
  value {
    string_value: "abc@gmail.com"
  }
}
fields {
  key: "number-integer"
  value {
    list_value {
      values {
        number_value: 123.0
      }
    }
  }
}