I need a sequence diagram for a food ordering system with the following requirements

Summary of Requirements Functional Requirements 1. Users of the website/app must be provided the following functionality: 1.1 Create an account. 1.2 Manage their account. 1.3 Log in to the system. 1.4 Navigate the restaurant's menu. 1.5 Select an item from the menu. 1.6 Add an item to their current order. 1.7 Review their current order. 1.8 Remove an item/remove all items from their current order. 1.9 Provide delivery and payment details. 1.10 Place an order. 1.11 Receive confirmation in the form of an order number. 2. The menu management system will only be available to the employees of the restaurant with the following functionally: 2.1 Add a new/update/delete vendor to/from the menu. 2.2 Add a new/update/delete food category to/from the menu. 2.3 Add a new/update/delete food item to/from the menu. 2.4 Add a new/update/delete option for a given food item. 2.5 Update price for a given food item. 2.6 Update default options for a given food item. 2.7 Update additional information (description, photo, etc.) for a given food item. Non-functional Requirements Allow the system to be modified to support and work on different languages. To allow orders' informations and users' informations to be shared between offices