foo.rb

class Conversation
  GOOD_ANSWERS = ["great", "awesome", "radical", "good"]
  BAD_ANSWERS = ["shitty", "terrible", "bad"]

  def initialize
    @ended = false
  end

  def ended
    @ended
  end

  def ask_for_name
    puts("Hey, what's your name?")
    @name = gets.chomp
  end

  def greet
    if last_name
      puts("Why, hello, Mr or Mrs #{last_name}")
    else
      puts("Oh, nice to meet you, #{first_name}.")
    end
  end

  def ask_about_day
    puts("How was your day?")
    @day = gets.chomp
  end

  def end_conversation
    if GOOD_ANSWERS.include?(@day)
      puts("Oh, great! I too had a good day.")
    elsif BAD_ANSWERS.include?(@day)
      puts("Aw, muffin. I'm sorry to hear.")
    else
      puts("Huh.")
    end

    puts("Your response is so interesting, that I will save it for later!")
    File.open('somefile', 'w') { |file| file.write("#{@name} had a #{@day} day") }
  end

  def end_conversation?
    puts("I am a lonely old woman and everyone hates me. Would you please keep talking to me?")
    keep_talking = gets.chomp
    @ended = true if keep_talking.split(" ").include?("no")
  end

  private

  def first_name
    @name.split(" ")[0]
  end

  def last_name
    @name.split(" ")[1]
  end
end

conversation = Conversation.new

  conversation.ask_for_name
  conversation.greet
while conversation.ended == false
  conversation.ask_about_day
  conversation.end_conversation
  conversation.end_conversation?
end