Write an Android/Iphone application

Service Request App. Customers Submit Service Request. Assign it to Staff/Labors from database who meets search criteria as near by around customer location. type of service , spoken language/ or nationality and hour/rate to provide the service. Notification goes to selected Staff to accept /or deny request. if accepted request logged in database with duration and start end date. once it is done customer will confirm service provisioning and invoice issued to pay the charge per service. a Mutual feedback will be raised to customer and staff to rate the request and quality of service and both Customer and staff manner. and logged into the database. Some post and pages will be required to describe the services and subscription fees for staff or labor. customer will be subscribe for free. Some features but not limited by it Location on maps Push notification Chat between Customer and staff. Mysql database er diagram