In the accounting firm you work for, you are given contracts which were executed on different dates. Your goal is to create a method that can label each of these contracts with their corresponding fiscal year. Note: A fiscal year is a period of 12 months that is used in government accounting, usually for budget purposes and financial reporting. Its definition varies from country to country, so your solution should be flexible and include flow variables for both the start and the end dates of the fiscal year. As an example, the federal fiscal year in the United States is the 12-month period that begins on October 1st and ends on September 30th of the following year.