By grinning and looking specifically at him, you will make him feel uncommon. Never check your watch or wireless when he is talking however give him your complete consideration. Grinning illuminates your whole face and passes on an uplifting state of mind. You need the person to realize that you are cheerful and will carry him happiness when he chats with you. No person would need to converse with somebody who will cut him down or pass on cynicism. Your grin resembles a neon sign perusing "welcome! I'm happy you're here".