- welcome them using their name,
- introduce yourself,
- take care of their needs,
- thank them, and
- invite them back.
Good customer service is that easy. You can include these standards in your training in many ways - video's, role-play, "how would you" questions, "pick the best way" scenarios, etc.
Markets, for any organization, are constantly changing so "people skills" become extremely important. Reminders in staff meetings or pre-operation meetings will go a long way. Focusing on this key area will not only give you a good ROI on training, but also show staff how important it actually is and where your priorities stand.