How to use the actions-on-google.List function in actions-on-google

function list(conv) {
  conv.ask('This is a simple response for a list.');
  conv.ask(new Suggestions(intentSuggestions));
  conv.ask(new List({
    title: 'List Title',
    items: {
      // Add the first item to the list
      [SELECTION_KEY_GOOGLE_ASSISTANT]: {
        synonyms: [
          'Assistant',
          'Google Assistant',
        ],
        title: 'Item #1',
        description: 'Description of Item #1',
        image: new Image({
          url: 'https://www.gstatic.com/images/branding/product/2x/assistant_48dp.png',
          alt: 'Google Assistant logo',
        }),
      },
      // Add the second item to the list

function list(conv) {
  if (!conv.hasScreen) {
    conv.ask('Sorry, try this on a screen device or select the ' +
      'phone surface in the simulator.');
    return;
  }
  conv.ask('This is a simple response for a list.');
  conv.ask(new Suggestions(intentSuggestions));
  // Create a list
  conv.ask(new List({
    title: 'List Title',
    items: {
      // Add the first item to the list
      [SELECTION_KEY_ONE]: {
        synonyms: [
          'synonym of title 1',
          'synonym of title 2',
          'synonym of title 3',
        ],
        title: 'Title of First List Item',
        description: 'This is a description of a list item.',
        image: new Image({
          url: IMG_URL_AOG,
          alt: 'Image alternate text',
        }),
      },

days[i]
            }`
          ],
          title: `${countLect}. At  ${timeConvert(parseInt(key.substring(1)))}`,
          description: `on ${days[i]}.`
        };

        console.log(
          `at ${t - 12 > 0 ? `${t - 12} PM` : `${t} AM`} on ${days[i]}`
        );
      }
    }
  }
  if (countLect >= 1) {
    conv.close(`Total ${countLect} Lectures`);
    conv.close(new List(result));
  } else {
    conv.close(
      `In this semester there aren't any lectures of ${prof} in your department`
    );
  }
  conv.ask(
    new Suggestions([
      `number of lectures of NTD`,
      `number of lectures of SKB`,
      `number of lectures of RJO`,
      `next lecture please?`,
      `Show Monday's schedule`,
      `whose last lecture is it?`,
      `first lecture today?`,
      `Whose lecture is it?`
    ])

app.intent("ask_with_list", conv => {
  conv.ask(
    new SimpleResponse({
      speech: "Here's Departments list",
      text: "Here's Departments list."
    }),
    new List({
      title: "Please select your department",
      items: {
        ICT_16: {
          synonyms: ["SOT ICT 16", "ICT batch 16", "16BIT"],
          title: "ICT-16",
          description: "Information and Communication Technology, Batch'16"
        },
        ICT_17: {
          synonyms: ["SOT ICT 17", "ICT batch 17", "17BIT"],
          title: "ICT-17",
          description: "Information and Communication Technology, Batch'17"
        },
        CE_16: {
          synonyms: ["SOT CE 16", "CE batch 16", "16BCP"],
          title: "CE-16",
          description: "Computer Science Engineering, Batch'16"

' For more information say "meetup ' + (i + 1) + '". ';
                }

            }
            ssmlText += '';

            if ( hasAudio ) {
                conv.ask(ssmlText.replace('&', ' and '));
            } else {
                conv.ask(textList);
                conv.ask(responseToUser);

            }

            if (hasScreen) {
                conv.ask(new List({
                    title: 'List of meetups: ',
                    items
                }));
            }

        }
        return conv;
    }

const menu = conv => {
  conv.ask("Here is our menu:");
  conv.ask(
    new List({
      title: "Menu",
      //You can add as many items as you want
      items: {
        ["Menu 01"]: {
          synonyms: ["menu 01", "item 01"],
          title: "Big Hamburger",
          description:
            "Lorem ipsum dolor amet try-hard YOLO readymade" +
            "poke truffaut plaid.",
          image: new Image({
            url:
              "https://cdn20.patchcdn.com/users/790386/20180525/063909/styles/T800x600/public/processed_images/shutterstock_337714676-1527287683-3245.jpg",
            alt: "Hamburger"
          })
        },