PARIS/BRUSSELS (Reuters) - The Netherlands and France are trying to convince fellow European nations at a conference in The Hague to end tax exemptions on jet fuel and plane tickets, as part of a drive to make the EU carbon neutral by 2050.In the first major initiative on air travel tax in years, the conference on Thursday and Friday - which will be attended by about 29 countries - will discuss ticket taxes, kerosene levies and value-added tax (VAT) on air travel. The Netherlands wants to agree..