code: def converse(self, quit="quit"):
      user_input = ""
      while user_input != quit:
          user_input = quit
          try:
              user_input = input(">")
          except EOFError:
              print(user_input)
          if user_input:
              while user_input[-1] in "!.":
                  user_input = user_input[:-1]
              print(self.respond(user_input))
  
file_path: nltk/nltk/chat/util.py
imports: import random
  import re
label_desc: Use image node_id 6 for calling the Chat obj's underlying member method code with example usage: obj.converse(quit) without return types