Reiko

Rita is a character of the day who appeared in the episode The Lotad Lowdown. She is the eldest sister of Nicole and Natalie. She is usually in charge of fixing the waterworks of the garden of the Flower shop. Her Japanese voice actress is Tomoe Hanba and her English voice actress is Amy Birnbaum.

As Rita entered the shop, she was quite surprised by Ash and his friends visiting them. Rita told her sisters that there was a problem with one of the watering pipes of the garden. After the group finished touring around the garden, Rita told Nicole that she needed to replace the broken watering pipe. While the pipe was being replaced, the Lotad come in to help in watering the garden.

(Source: Bulbapedia)