I talk with a voice assistant 小爱同学. When I ask it: 今天是几号？ It answers: 今天是9月30号，周四，衣历辛丑年八月二十四。 It is difficult for me to understand this phrase. I want a shorter answer: 今天是9月30号 or 30号 or 三十.
小爱同学 is very smart. It understands commands in natural language. For example when I say 再说一遍 it repeats its last phrase. The format of the command is not fixed. You can say 刚才您说的那一句我没听清了，麻烦您再说一遍吧 and it will understand you.
I do not know how to ask another (person) to answer shorter. "Can you say it shorter?"