Casual conversation is a form of conversation that occurs between friends and families. There are no specific rules or manner in which the participants speak to each other. It is otherwise known as Informal Conversation.
Consultative conversation on the other hand is a form of conversation that occurs between people who have a close relationship but not actual friends or families.
For example, people involved in this type of conversation are the likes of Doctors and Patients, Counsellors and Students, etc. It is often considered a Semi-formal conversation.
The reason a person needs to know the difference between the two styles of conversation is for individuals to know how to present and conduct themselves appropriately during the conversation.
Technician A is correct, there could be water or other contaminant in the brake fluid reservoir. The swollen cap needs to be replaced, some sell only the rubber part of the cap which could help save you money.
It make decision by describing and analyzing the available data in a predictive or adaptive manner thereby performing an efficient and smart actions based on that analysis