Hi @apoorv.joshi,
Ideally, displaying a complete webpage inside the chat window will not be very good user experience.
However, if you would like to proceed with your requirement.
There is no direct provision to do that.
You will need to create a custom template with Iframe in it and display the webpage in the iframe.
Please refer the following link to understand the implementation of custom template:
https://test-discourse.kore.ai/t/is-there-a-way-to-show-list-of-items-and-allow-multiple-selection-from-the-list/714/16
Let us know if you need any further clarification on the same.
Regards,
Yoga Ramya