• Your utterance is likely being answered by Now Assist conversational search/disambiguation (so it doesn’t route into your LLM topic); improve the topic’s natural‑language description/instructions and add example prompts so “change office location” maps cleanly to that topic.
• The “Thinking…” hang is a known behaviour for  Now Assist in Virtual Agent issue on certain releases/patches—apply the relevant platform patch/hotfix .
• Validate Now Assist in Virtual Agent prerequisites/configuration are met (NAVA configured, LLM topic discoverability best practices followed) and re-test with realistic queries after updates. Try test the  with a working query in Designer and then Try same in VA Run time.

Regards

RP