Using break to exit a loop help

[JJG]

Hi all, I'm having a problem trying to run this program. I was messing around with a similar program I tried to create and it would not work. So i took this one right out of my book and I the get the same outcome. Any help would be great ty

prompt = "\nPlease enter the name of a city you have visited: "
prompt += "\n(enter 'quit' when you are finished.) "

while True:
    city = input(prompt)

    if city == 'quit':
        break
    else:
        print("id love to go to " + city.title() + "!")
Please enter the name of a city you have visited:
(enter 'quit' when you are finished.) tbay
Traceback (most recent call last):
  File "input.py", line 30, in <module>
    city = input(prompt)
  File "<string>", line 1, in <module>
NameError: name 'tbay' is not defined