Working on the Account Manager Digital Assistant System based on Machine Learning, Natural Language Processing, NiFi, and Hive.Tracking number email request classification project:Added a whole new functionality to System to reduce up to 15% daily workload for Account Managers.Designed a process algorithm to automatically distinguish and reply tracking number request emails.Trained a Random Forest model and polish the performance based on feature extraction strategies, variables adjustment, and results visualization.Designed a multi-cases Regex procedure based on email analysis, pre-processing and text mining.Built a pre-filter system which significantly saves up to 30% run-time. Tested and improved performance for Regex model and Random Forest model based on cross validation, random shuffle split, and confusion matrix.Built a tracking number verify&correct system based on Regex, HTTP query, and database match.Classification performance reaches over 97% accuracy and has low latency in real time environment.