When the service is invoked with a message, the service will respond with a record including that message received via an HTTP GET.
Run the Ballerina project created by the service sample by executing bal run
from the root.
Once successfully executed, Listener will be started at port 8090. Then you need to invoke the service using the following curl command
$ curl http://localhost:8090?name=John
Now service will be invoked and returns record as
{
from: "Choreo"
to: "John"
message: "Welcome to Choreo!"
}