Populate enquiry form with available job slots

Hi there,

A client of our uses service M8 and has asked us (their new web developers) to create a signup form where clients can fill in their details and choose a repair slot.

I looked at Zapier, but it can not handle populating a form with available slots from Service M8.

What would be the best way to go about this? Is there a prebuilt addon that can populate a form and then create a job on submission? Or is there info on your api somewhere that I can read?

Thanks