Add field descriptions to product_recommendation example

[Pariharx7]

resolves #1088

[georgeh0]

This is not the standard way to add description for fields.

Please convert these dataclasses to Pydantic models.

Please also test these field descriptions are passed to LLM as expected.

[Pariharx7]

HI, thanks for the review!. I noticed the original code used dataclasses for all the defined classes, and my assigned issue (#1088) asked to add field descriptions for the product recommendation example.

Just to confirm - you'd like me to convert these dataclasses to Pydantic models so the field descriptions are correctly recognized by the system?

Thanks again for your guidance!

[georgeh0]

Thanks for asking. Yes, we would like to convert them to Pydantic models iwth Pydantic field description.

BTW, the issue #1088 linked #1087 which has more background about this.

Thanks!