code: def build_available_time_string(availabilities):
      
      prefix = 'We have availabilities at '
      if len(availabilities) > 3:
          prefix = 'We have plenty of availability, including '
  
      prefix += build_time_output_string(availabilities[0])
      if len(availabilities) == 2:
          return '{} and {}'.format(prefix, build_time_output_string(availabilities[1]))
  
      return '{}, {} and {}'.format(prefix, build_time_output_string(availabilities[1]), build_time_output_string(availabilities[2]))
docs: Build a string eliciting for a possible time slot among at least two availabilities.