Please model the process on signavio below with all relevant constructs including data.

you may also draw this on paper,

In BuyRightAlwaysBuyOnce (BRABO), a utility comparison site, once a service improvement suggestion has been received via email from a customer, it is first entered into BRABO's database by a Customer Service Officer (CSO), who sends the suggestion's reference number to the customer by email. Then the suggestion is investigated by the CSO so that a response can be prepared. In order for this to happen, the CSO contacts the Operations Improvement (OI) team who first assess the CSO's suggestion for feasibility and then consider the customer benefit. The Operations Improvement team will draft a formal response to the CSO, who can then create draft response to the customer. Once ready, the CSO provides that draft response for review by the GM Operations Improvement. If the GM Operations Improvement (GM OI) does not approve the response, it needs to be prepared again by the officer, going through the same steps with the Technical Delivery team until the GM OI is happy with it. As soon as the new comments are received, all activities on that suggestion stop and the process requires the CSO to undertake part of the process again, returning to the "Investigate suggestion" stage. The service improvement suggestions process finishes only once the response has been approved by the GM OI, in which case the response is immediately sent to the customer.