Final answer:
Nanami's contacts with Amazon after placing an order represent transactional communications, which confirm and update customers during the ecommerce purchasing process.
Step-by-step explanation:
The three instances of contact between Amazon and Nanami are called transactional communications. These include the order confirmation, the shipping confirmation, and providing a tracking number.
The Transaction Model of communication is defined as an approach that describes the process by which communicators create social realities within the contexts of their cultural, relational, and social surroundings.
The interactions described in the question are part of the online purchasing process, common in ecommerce activities, symbolizing the stages of transaction completion and giving customers updates on their purchase status.
Face-to-face communication, like video calls, is an example of a transactional model of communication, where participants actively exchange thoughts and emotions.