“Create a document called Q4 plan” makes a blank document with that title and links to it, instead of asking for text first. Text or a saved result still goes in when you give one.
When the assistant asks for something it needs, such as “What should it be called?”, your next message answers it and the operation goes ahead. A new request instead drops the question. A missing chat channel is asked for as “Which chat channel should it go to?”.