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customer – n. a person who buys from or uses the services of a company especially regularly

proud – adj. very happy and pleased because of something you have done, something you own, someone you know or are related to, etc.; feeling pride

relaxed – adj. calm and free from stress, worry, or anxiety; not worried or tense

merely – adv. nothing else than; just

staff – n. a group of people who work for an organization or business