I have never gone to a dentist, maybe just one or twice in my entire life. I found a dentist who has his office next to my home and in my desperation for my dental hygiene, I made an appointment for the next week with him.
However, I found another dentist who offered me the same service for a lower price. How can I cancel the first appointment that I made in a polite way? Please keep in mind that his office is next to my home, so it's probable that I could see him someday.