@startuml Registration
!include styling.puml
title Registration
actor "Pregnant Woman" as PW
actor "Clerk" as Clerk
participant "App" as App
participant "Engine" as Engine
participant "Server" as Server

PW -> Clerk: Provide demographics
Clerk -> App: Enter patient data
App -> Engine: Search for matches
Engine -> Server: Search for matches
alt no matches
Server -> Engine: Return no matches
Engine -> App: Return no matches
App -> Engine: Create Patient
Engine -> Server: Create Patient
Server -> Engine: Return Patient
Engine -> App: Return Patient
else potential matches
Server -> App: Returns potential matches
App -> Clerk: Display potential matches
Clerk -> App: Select match
App -> Engine: Identify patient
Engine -> Server: Sync patient data
Server -> Engine: Return patient data
Engine -> App: Return Patient
end
App -> Clerk: Display Patient

@enduml