Hi guys 🙂 Just started learning about building agents via Vapi. got a few quetions...really appreciate it ifyou can help: 1. I am playing with the workflows. I created my first workflow linked it to my assistant (model: openai). When I test it after clicking "start call", the conversation crashed halfway with error: "Error: exist room because room was deleted". Then I realized the workflow is disconnected from my assistant and I can't relink it again. It seems that the workflow does not work with other model provider other than Vapi. Is that right? 2. I want to gather the purpose of the incoming call. When I design the workflow, I am aware that I can use "Gather" to collect a specific info and save it. But I want to do it in a more subtle way. I want the agent to get the purpose of the incoming call by evaluating the content instead of asking the question directly. Is there a way to do so?