ActionController::RoutingError

Hi All, I am just learning Rails. I had encountered a routing error,
though I think I have specified the correct rules in the routing.rb. I
have attached the code. Please help

routing.rb

  map.connect ':controller/:action'
  map.connect ':controller/:action/:id'
  map.connect ':controller/:action/:id.:format'
Controller

class EntriesController < ApplicationController
  def sign_in
    @name = params[:visitor_name]
  end
end
View

<html>
<head><title>Hello <%=h @name %></title></head>
<body>
<%=h @name %>
<% form_tag :action => 'sign_in' do %>
<p>Enter your name:
<%= text_field_tag 'visitor_name', @name %></p>
<%= submit_tag 'Sign in' %>
<% end %>
</body>
</html>
Thanks