This case study is about the system analysis and design of Quick Cab, a web-based system that automates the booking and payment process for taxi services in Sydney, Australia. It includes a system justification, business case description, project scope, cost and schedule analysis, use case diagram, sequence diagram, context diagram, level 0 dataflow diagram, entity relationship diagram, screen interfaces, and Gantt chart. The assignment is for ISY2001 System Analysis and Design course in Teaching period 2, 2019, with a weighting of 20% and due date of 20th September 2019 via Moodle before 5 PM (Week 9).