When they request something from you, provide a time when you will get back to them if you can't provide it immediately. Get back to them as promised even if you don't have the information requested to let them know you are still working on it. Customer service starts with each other. Never become confrontational or defensive with a fellow employee. Put your ego away and have a strong spirit of cooperation.
Disagreement can be healthy but do so in a professional, respectful manner.
Hold all employees in high regard and show respect for all employees. Pettiness will not be tolerated. We are a team and will work as a team. Healthy exchanges of ideas and viewpoints are welcomed. But, do not put down fellow employees or talk behind their backs.