Python Mores code converter flask wtf question

below the code works message to mores and mores to message. but I want to make this mores code converter as a website using flask what the form(wtf). but I have no idea how to do it. if you can code it I would really appreciate it.

from flask import Flask

MORSE_CODE_DICT = { 'A':'.-', 'B':'-...',
   'C':'-.-.', 'D':'-..', 'E':'.',
   'F':'..-.', 'G':'--.', 'H':'....',
   'I':'..', 'J':'.---', 'K':'-.-',
   'L':'.-..', 'M':'--', 'N':'-.',
   'O':'---', 'P':'.--.', 'Q':'--.-',
   'R':'.-.', 'S':'...', 'T':'-',
   'U':'..-', 'V':'...-', 'W':'.--',
   'X':'-..-', 'Y':'-.--', 'Z':'--..',
   '1':'.----', '2':'..---', '3':'...--',
   '4':'....-', '5':'.....', '6':'-....',
   '7':'--...', '8':'---..', '9':'----.',
   '0':'-----', ', ':'--..--', '.':'.-.-.-',
   '?':'..--..', '/':'-..-.', '-':'-....-',
   '(':'-.--.', ')':'-.--.-', ' ': ' '
}

app = Flask(__name__)

def morse_code_converter(input_message, cipher_direction):
   if cipher_direction == "encode":
      my_cipher = [MORSE_CODE_DICT[char] for char in input_message]
      return " ".join(my_cipher)
   else:
       my_message = input_message.split()
       decipher = [key for char in my_message for key, value in MORSE_CODE_DICT.items() if value == char]
       return " ".join(decipher)

def main():
    should_end = False
    while not should_end:
        direction = input("Type 'encode' to encrypt, type 'decode' to decrypt: ").lower()
        if direction == "encode" or direction == "decode":
            message = input("Type your message: ").upper()
            output = morse_code_converter(input_message=message, cipher_direction=direction)
            if direction == "encode":
                print(f"your message to morse code is {output}")
            else:
                print(f"your morse code to message is {output}")

            restart = input("Type 'yes' if you want to go again. Otherwise type 'no': ").lower()
            if restart == "no":
                should_end = True
                print("Goodbye")
        else:
            print("You type it wrong. Type 'encode' or 'decode'")

if __name__ == '__main__':
    main()