app/views/date_ranges/_date_range.html.erb
<p>
<% if date_range.start_date == date_range.end_date %>
<strong><%= l date_range.start_date %></strong>
<% else %>
<strong><%= l date_range.start_date %></strong>
<%= t 'date_range.pronouns.to' %>
<strong><%= l date_range.end_date %></strong>
<% end %>
</p>