Wayfair EDI issue

I have read your project details. I have to ask a few questions. Can you please message me via chat so we can discuss all the details to elicit all the requirements and hence start the development? I will showcase all the skills and my experience for this project over the chat. Please message me so we can resume this discussion. Can you provide me all the functional/Non-functional requirements via a document? It seems like an interesting project. I would like to discuss all the requirements with you, so I can mark the scope of this project. Please also note that final estimation will be provided once all the requirements will be revealed from your end. Hence, my cost of development & deadline solely depends on what you reveal (in detail). Looking forward to conduct an extensive chat with you.

Which is the Data Source and Data Formats? I want to know the possible usecase. what could be the possible language of choice? Thanks.