"In a previous position, it was a particularly busy workday and our schedulers had overbooked the day. I made the mistake of grabbing the wrong chart not realizing that an additional pet visit was scheduled that day. I quickly reviewed the chart and reason for the visit and entered the room. I started the visit by greeting the customer and pet and stated that I realized that the dog was there because he was not feeling well and that there was a suspected tick bite. The customer quickly corrected me and told me that the dog was actually there to be seen for repeated vomiting. I realized my error and was embarrassed. I immediately apologized to the customer and explained that I'd grabbed the wrong chart and he was very kind and understanding. Moving forward, I always double-check to be sure that I have the chart that matches the pet visit by comparing to the schedule and double checking when greeting the customer."