[Python] Trying to get my GUI windows automatically exit when I open the next window

How can I manage to automatic cancel this 1st window when I click the next window button?

sample code:

from tkinter import *
from tkinter import messagebox

root = Tk()
root.title("GUI practice")

def open():
top = Toplevel() # new window
top.title("Kokomi")
labels = Label(top, text="This one automatically close when i click the next window").pack()
button2 = Button(top,text="Close window", command=top.destroy).pack()
button3 = Button(top,text="Next window", command=open2).pack()

def open2():
top = Toplevel() # new window
top.title("Guide")
labels = Label(top, text="end").pack()
button2 = Button(top, text="Close window", command=top.destroy).pack() # destroy to quit things

button = Button(root, text="Open(No need to close this)", command=open).pack()


root.mainloop()


[Click open][1]
[Click Next window and after that this windows should disappear and continue to the 3rd picture][2]
[The 2nd picture goes disappear when i click the next window][3]

[1]: https://i.sstatic.net/plS1T.png
[2]: https://i.sstatic.net/EFW76.png
[3]: https://i.sstatic.net/xSZCp.png

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