Refer to the Restaurant Research Scenario. What are the interactions between the customers and the wait staff called?

Rise in households with two primary income providers

Explanation:

Restaurant Research Scenario - Insight Research, a marketing research company, has been hired by a network of national family restaurants to better understand its customers and preferences. The restaurant chain has several competitors competing for the same customer segments and has experienced sales declines over the past few years. The researchers "hide" and claim that they are appropriate because they observe the interaction between customers and waiting staff. They then act as clients, expressing their views on living in person. They also add details that other customers see when interacting with each other and restaurant staff. Some of the results have resulted in customers being heard because they were not particularly careful and heard customers were reluctant to return. Some researchers found that the food was not very good and that several customers were returning orders.