Unable To Add In Symbols for Name

[KhoonSun47]

The issue is on adding a name that specifically needs a symbol in it, especially names with S/O and D/O.

Since this application deals with the attendance of the student, it would be better if the user can enter the legal name of a student so that the user can easily identify the student.

Without the ability to enter the legal name, it might cause some inconvenience to the user.

• Current Input:
  ac n/John S/O Doe c/F14-3 e/johndoe@gmail.com p/91234567 t/@johndoe g/johnDoeGithub

• Current Output:
  Names should only contain alphanumeric characters and spaces, and it should not be blank

• Expected Output:
  This person should be added successfully to the application.

Since there is a validation to check for alphanumeric constraints in name, is it possible to improve upon this validation to add in symbols too?