obliging — willing or eager to do favors, offer one's services, etc.; accommodating: The clerk was most obliging.
accommodating — If you describe someone as accommodating, you like the fact that they are willing to do things in order to please you or help you.
agreeable — If something is agreeable, it is pleasant and you enjoy it.
civil — You use civil to describe events that happen within a country and that involve the different groups of people in it.
cooperative — A cooperative is a business or organization run by the people who work for it, or owned by the people who use it. These people share its benefits and profits.
courteous — Someone who is courteous is polite and respectful to other people.
mannered — having manners as specified (usually used in combination): ill-mannered people.
mannerly — having or showing good manners; courteous; polite.
polite — showing good manners toward others, as in behavior, speech, etc.; courteous; civil: a polite reply.