This document summarizes lessons learned from customer interview sessions. It discusses tools for understanding customer segments like empathy maps and personas. An empathy map is presented for "Miguel Pinto", a restaurant manager experiencing issues with international clients and language barriers. Another empathy map is shown for "Bernd Schuster", a hotel food and beverage manager facing similar problems. The document also reviews interview findings, noting the process was too long and open-ended. It suggests shortening interviews and ensuring explanation of the TransMenu concept being tested.