ArcPark System Architecture Program flow for non-reservation of vehicles Program flow for reservation of vehicles Program flow when the vehicle enters the parking area Program flow when the vehicle leaves the parking area Program flow when the client/driver asks Parko (Chatbot) Database Design NoSQL Database Structure of the system System Design User interface for the public view User interface for the chatbot Login page Dashboard Add parking area form Vehicle entering form Tickets are generated upon entering Logging of events page NodeMCU Ultrasonic sensors