Say you need a particular report to include data fields not covered by the current report templates you have, you might send an example of a current report and any email correspondence you've received requesting or expressing a need for the inclusion of additional data.
Usually, the more information you can provide, the quicker we will be able to get back to you. Projects will take longer than simple tasks to assign, because the impact on resources is greater and consequently the deliberation process is more detailed.
The more we know about a particular requirement, the easier it is for us to determine the right resources needed to get the job done. This is particularly the case if resolving the problem will result in a large number of people being able to work more efficiently and/or you have a hard deadline to get the job done.