Ask again if wrong guess with While.

[menator01]

If you would like to check against a list of names:

#! /usr/bin/env python3.9

names = ['john', 'mary', 'bob', 'sue']

while True:
    name = input('What is the name: ').lower()
    if name not in names:
        print('That name is not in the list.')
        continue
    else:
        print('That name is in the list.')
        break

Output:
What is the name: charlie
That name is not in the list.
What is the name: bob
That name is in the list.