During high traffic volume, what is a reason additional services might be refused?

During high traffic volume, one reason additional services might be refused is due to the high workload of controllers. When air traffic controllers are managing a significant number of aircraft, their ability to provide extra services, such as flight following or traffic advisories, may be limited. The increased traffic can lead to a situation where controllers must prioritize the essential duties of maintaining safe separation and providing standard clearance services over additional requests that could distract them from those critical tasks.

Controllers must focus on ensuring the safety and efficiency of all aircraft within their airspace, and if the workload becomes too burdensome, it is crucial to streamline operations to maintain safety. Therefore, refusing additional services allows controllers to concentrate on their primary responsibilities, ensuring that all aircraft are managed effectively and safely.