How to convert from description to system sequence diagram?

I was ask to convert descriptions to system sequence diagram?
May i know how to do that?

Hi Soon Hai,

For the answer to your question, please refer to this article:
http://resource.visual-paradigm.com/uml_diagrams/sequence_diagram/synchronization_between_system_level_sequence_diagram_and_flow_of_event.html#generating_sequence_diagram

If there are any questions about the steps, please let me know.

Best Regards,
Jick