How to record an order in Woocommerce when filling in Name, Email and Phone?

Question

JavaScript

Good time.
When placing an order on the checkout page, the user enters the first three fields (Name, Email and Phone), after clicking on the "Next step" link, these three fields are hidden and the user proceeds to the Choice of payment and delivery.
Essence of the question: how to record (without reloading the page) an order when filling in Name, Email and Phone? On event - click on "Next step".

Those. in fact, in addition to the method of payment, delivery and commentary on the order, checkout has everything. The order status should most likely be empty. So that I can determine that this is an unfinished order. Ajax can do this, but what constructs should be involved?