I'm trying to prompt the agent (chatgpt 4o latest) to end the call after finishing and it does so correctly in the chat, but when I talk to the assistant It always adds an goodbye at the end even though I try to suppress this in the prompt. Why are they behaving differently and what can I do to make the voice assistant behave like the chat https://cdn.discordapp.com/attachments/1228667357849849856/1413563928692129984/image.png?ex=68bc637f&is=68bb11ff&hm=f0ec65f80316cf99ad7c5fdd16f96cc8a01dcb7518a5a9c9caf3ba2c78d4bad5& https://cdn.discordapp.com/attachments/1228667357849849856/1413563928965021807/image.png?ex=68bc637f&is=68bb11ff&hm=73383a1a7bc8b9f7a2b893eace1b6e46cc206fcecb8851e25bd748f9c04bde96&