Ruby / Rails : Refactoring If/Else Statement

How might one refactor this snippet of code?

All suggestions are encouraged...

<% if @user.plan_id == 1 %>
      <span class="label label-info">Plan1</span>
  <% elsif @user.plan_id == 2 %>
      <span class="label label-warning">Plan2</span>
  <% elsif @user.plan_id == 3 %>
      <span class="label label-info">Plan3</span>
  <% elsif @user.plan_id == 4 %>
      <span class="label label-warning">Plan4</span>
  <% elsif @user.plan_id == 5 %>
      <span class="label label-info">Plan5</span>
  <% elsif @user.plan_id == 6 %>
      <span class="label label-warning">Plan6</span>
  <% elsif @user.plan_id == 7 %>
      <span class="label label-info">Plan7</span>   
  <% elsif @user.plan_id == 8 %>
      <span class="label label-warning">Plan8</span>
<% end %>