[Python] How do I make it so that the code will ask you your name again if the user answers no...

Here is my code:

fullName = input("Hello there, what is your name?")

fName = (fullName[0:fullName.index(" ")])

sName = (fullName[fullName.index(" ")+1:])

print("So, your first name is", fName)
print("and your second name is", sName)
answer = input("Is this correct")


Here is where I'm having most of my issues, everything before this works fine to my knowledge:

if answer == "Yes" or answer == "yes":
print("Great, lets get started!")
elif answer == "No" or answer == "no":

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