If you are writing a letter of intent for a business then there a few things you need to keep in mind. You may start your letter by mentioning your name, address, email address and contact number on the top left corner.
So you see, the response requested is indicated in the very form and name of the document itself. The Letter of Intent has no established place in International trade law. Where they are used _ rarely _ is in some small niche internal markets and trades. The RFQ, Request for Quotation, a standard protocol in the business world, is what most brokers actually want when they err in using an LOI.