Hi all! Encounter this question here and need some help!!

Question 2 (a) A school library has 3 study rooms available for students to book during its opening hours, on a first-come-first-serve basis. Assume there is no pre-booking, that is, the study rooms can be booked only on the day of usage itself A library staff should be able to select to perform one of the following actions: Book a room o If there is no available room, the message: No study room available currently is displayed and the action of booking a room is terminated. o If there is at least one room available: The case where only one room left: Inform the student this is the only room number left and asks if the student wishes to proceed. If student chooses not to proceed, terminate the action of booking a room. - The case where there is more than one available room: List the unoccupied room numbers in ascending order and allow the student to make a choice. Question 2 (a) A school library has 3 study rooms available for students to book during its opening hours, on a first-come-first-serve basis. Assume there is no pre-booking, that is, the study rooms can be booked only on the day of usage itself A library staff should be able to select to perform one of the following actions: Book a room o If there is no available room, the message: No study room available currently is displayed and the action of booking a room is terminated. o If there is at least one room available: The case where only one room left: Inform the student this is the only room number left and asks if the student wishes to proceed. If student chooses not to proceed, terminate the action of booking a room. - The case where there is more than one available room: List the unoccupied room numbers in ascending order and allow the student to make a choice