sallam allikum bro's n sis's. As allah says its our jobs to let the others know about the message of quran n islam. We should try using the quotes of quran in our decisiiion weather we are talking to a non-muslim or not. As our beloved prophet (PBUH) stated even if u know a verse of a quran let others know. i try doing that at my school mashlala i am kinda used to it know. May allah make it easeir for all of us to spread a positive mesage of Islam. Amen.