def end_element(name)
case name
when 'availabilityZone', 'instanceType', 'productDescription', 'reservedInstancesId', 'state', 'offeringType'
@reserved_instance[name] = value
when 'duration', 'instanceCount'
@reserved_instance[name] = value.to_i
when 'fixedPrice', 'amount'
@reserved_instance[name] = value.to_f
when 'item'
@response['reservedInstancesSet'] << @reserved_instance
@reserved_instance = {}
when 'requestId'
@response[name] = value
when 'start'
@reserved_instance[name] = Time.parse(value)
end
end