Capturing information from a user in a LINE chat conversation

  • Release version: Australia
  • Updated March 12, 2026
  • 2 minutes to read
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    Summary of Capturing Information from a User in a LINE Chat Conversation

    The Virtual Agent Designer enables you to prompt and capture information from users during a LINE chat conversation. This tool allows for the creation and management of conversation topics, enhancing user interaction through various input controls and bot responses. Users must consent to receive notifications before any can be sent.

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    User Notification Consent

    Users can opt-in to receive notifications by entering "Notification" in the LINE chat, which prompts a response with subscription options. Administrators can also configure subscription settings through the portal.

    User Input Controls

    The following input controls are available for capturing user responses:

    • Text: Users can enter up to 5000 characters.
    • Static Choice: Users select from a predefined list with a maximum of 20 characters per label. A user can see up to 13 quick replies at a time.
    • Boolean: Users provide a Yes or No response.
    • File Picker: Users can send files of types JPG, PNG, BMP, and MP4 with specific size limits (10 MB for images, 200 MB for videos).
    • Date Time: Users select a date, time, or both.
    • Carousel: Users choose an item from a carousel of up to 10 images, each with character limits on title and text.

    Bot Responses

    Bot responses supported in the Virtual Agent Designer include:

    • Text: Sends a plain text response.
    • Image: Sends an image to the user.
    • Link: Sends a web link.
    • Web UI Image Card: Sends compact content with an image and text from a record.
    • Table: Displays information in table format.

    For further configuration details, refer to the Assistant Designer documentation on user input controls and bot responses.

    Use the collection of input controls provided by the Virtual Agent Designer to prompt and capture information from the user in a LINE chat conversation.

    Virtual Agent Designer is a diagram tool for creating and managing topics, which are blueprints for conversations between a virtual agent and user. For more information, see Using Virtual Agent Designer.

    User notification consent

    Users must opt in to receive notifications. No notifications can be delivered until the user grants consent.

    There are two ways for users to grant consent to receive notifications:
    • The user can enter Notification into the LINE chat with your business. The user gets a bot response with the option to subscribe or unsubscribe from receiving notifications for your business on LINE.
    • As an administrator, you can set up the option for users to subscribe or unsubscribe from notifications from your portal. See Subscription-based notifications for more information.

    User input controls

    The Conversational Integration with LINE application supports the following user input controls in Virtual Agent Designer.

    Table 1. Supported user input controls
    User input control Description
    Text User enters a plain text string in the conversation.

    The maximum character limit is 5000 characters.
    Static Choice User selects an item from a predefined list.

    In a quick reply, the label has the maximum character limit of 20 characters. At a time, a user can view only 13 quick replies. If there are more than 13 quick replies, the pagination format is used to view more options. The default value of the maximum number of replies for a page is set in the sn_va_line.max.picker.choices system property. The property is located in the System Property [sys_properties] table.
    Boolean User enters a Boolean response to the bot. For example, the user can reply Yes or No in a chat conversation.
    File Picker User sends a file to the bot.
    The supported file types are JPG, PNG, BMP, and MP4. Files have a maximum size limit based on file type:
    • For images, the maximum size limit is 10 MB.
    • For videos, the maximum size limit is 200 MB.
    Date Time User selects a calendar date, time (hours and minutes), or both.
    Carousel User selects a single item from the carousel.

    In a carousel, the title for an image has a maximum limit of 40 characters and the text for the image has a maximum character limit of 60 characters. At a time, a user can view only 10 images. If there are more than 10 images, the pagination format is used to view more options. The default value of the maximum number of images in the carousel for a page is set in the sn_va_line.max.carousel.cards system property. The property is located in the System Property [sys_properties] table.

    For more information about configuring user input controls, see Assistant Designer user input controls.

    The Conversational Integration with LINE application supports the following bot responses in Virtual Agent Designer.

    Table 2. Supported bot responses
    Bot response Description
    Text Bot sends a plain text string to the user.
    Image Bot sends an image to the user.
    Link Bot sends a web link to the user.
    Web UI image card output Bot sends content from a record in a compact format, including an image with text.
    Table Bot response is displayed as a table.

    For more information about configuring bot responses, see Assistant Designer bot responses.