A famous hotel is providing the service of automated ordering and delivery system of any food at any hour of the day through an application (order through application, through call), besides they are providing dine in and delivery service (to specific room) both to access the food. As the system is automated therefore the guest can place order from the room following the instruction on the application. The guest also can call through the specified application to make the system more accurate. Following questions need to be addressed on the basis of above problem.

 (a) Name and elaborate personas involved in the above mentioned problem. 

(b) Write the detailed scenarios for the problem using the specified personas. 

(c) Analyze the tasks involved in the scenario and provide the hierarchical task description of the food ordering system in detail by clearly expressing the success and alternative scenarios. 

(d) Design a prototype for the application that the guest could order and receive food.

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