How to make a product selection through Contact Form 7, its quantity, and integration with WooCommerce?

Question

WordPress

Please tell me, I need to integrate Contact Form 7 with WooCommerce.
So that the user can first select a category in the left window, and in the right - the product and its balances.
And also he could choose the quantity of goods.

After selecting a category, a drop-down list of products, the client enters the quantity of the product and he goes to the checkout page.
If there are knowledgeable people, tell me, or do it, naturally for a fee.

The bottom line is that I want to make an exchanger.