Interview advice

Hi, my name is Angela. I graduated LPN school Jan. 2009 and still have not found a job. I had an interview today and was thrown really off guard by one of the questions asked. I would greatly appreciate if someone could tell me how I could have answered this question better.

I was a Medical Receptionist at my last job and the interviewer asked me who my customers were at my last job. The only answer I could come up with was...the patients (it was a Doctor's office that I worked at), but I could not help but think to myself on the ride home...should I have answered that by saying there were no customers only patients b/c we should not consider patients as customers. Please get back to me if anyone has any input on this.

Thank you!!!!