When an ally in the team presses " Need healing" and then sage or skye presses the button with the healing ability and it is on cooldown, then sage or skye would say something like "I can't heal right now", "No charge" and that all allies would hear it. Alternatively, it could be implemented so that the allies always hear it, but if the player spams the button, the allies would only hear it once in 15 sec for example (also, it is necessary to add a checkbox that would disable this function). This will be useful when the healer can't speak in voice chat.