Need Help: AI still saying “minus” instead of “dash” for part ID 🙏

Hey everyone — I’m running into a small but frustrating issue with my assistant on VAPI.

In my prompt, I’ve clearly instructed the AI to:

Say “dash” instead of “minus” for hyphens (like in LJ6T-18B955-FD)
Speak IDs slowly, one character at a time
Say “zero” instead of “O”
Only apply this behavior when reading part IDs inside the trim

Despite all that, Amelia (the AI) still occasionally says “minus” instead of “dash,” especially when the trim is read automatically (not after being asked). It’s inconsistent — sometimes she gets it right when I ask for the ID, but not when she reads the full trim.

Has anyone found a reliable fix for this behavior?

Would love any advice or prompt strategies that worked for you. Thanks 🙏

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