https://en.wikipedia.org/wiki/Chatbot
https://www.bnext.com.tw/search/tag/Chatbot
Improved Personalization Over Time:
When chatbots employ AI and machine learning, they can remember what a user asked in prior communications, and personalize the current conversation based on information from all previous ones. This provides a much better user experience and higher degree of customer satisfaction, while offering more effective communication patterns than human operators would be able to provide.
Rouhiainen, Lasse. Artificial Intelligence: 101 Things You Must Know Today About Our Future (p. 95). Kindle edition.
so, who says the chatbot cannot become the perfect therapist ?