今天突然想写一个及其简单的对话，但是在if 语句那里不会写了 向大神求助

people = ['taylor','swift','red']

for a in people:
    print(a)
aa = input('Which people do you like?Tell me,and I will repeat to you:')
print(aa)
bb = input('Are you shy? Answer Yes or No:')
print(bb)
if  bb== Yes:
    print('You are so lovely')
else:
    print('Ok')