Show a dialog message while Consuming a Web Service

Hi pepople..

I am consuming a WevService in ABAP succesfully but it takes a long time to get the data.
The application get stuck for a while ( about 2minutes).

My question is:
Is there a way to show a DIALOG . (wait, loading, progress_indicator) to show the user.

This method takes too much time.

CALL METHOD obj_prxy->OBTENER_MICROS_VENTAS_DETALLE1

          EXPORTING

            input    =  obj_input

          IMPORTING

             output  =  obj_output.

Regards

Thank you