As @ronak mentioned, you can try to leverage Hero Card in Botframework. Please try following code snippet:
const card = new builder.HeroCard(session);
card.title("Title");
// card.subtitle("Subtitle");
card.images([builder.CardImage.create(session,"https://learn.microsoft.com/en-us/media/hubs/botframework/bot-framework-intelligence-smarter.svg")])
card.text("<a href="https://bing.com">Bing</a>");
const msg = new builder.Message(session);
msg.textFormat(builder.TextFormat.xml);
msg.attachmentLayout(builder.AttachmentLayout.carousel)
msg.attachments([
card
]).toMessage();
session.endDialog(msg);
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solved Hyperlinks in bot using node.js