The purpose of this spreadsheet is to present an example of detailed requirements for an Automated Function (AF). The example is part of the Trips-R-You Flight Booking Case Study. It's purpose is to provide an integrated, end-to-end set of requirement examples. 

The following high-level requirement identifies the need for this capability:

“The system shall be able to identify the set of selectable journey options applicable to a given trip.”

Section 3.6 of the case study presents the scenario describing detailed discussions with stakeholders about their needs related to the above requirement. These discussions lead to the example detailed business requirements documented in this spreadsheet and the Data Dictionary. When those discussions were concluded, and the contents of this spreadsheet reviewed and signed-off, the following  'formal' detailed requirement was produced to represent the detailed requirements for this function:

The system shall be able to identify viable journey options based on the search parameters for a trip – as specified in DR18 – Finding Journey Options AF v1.0.”