Let's consider a scenario where a virtual agent assists hiring managers (end-users) in the recruitment process. Imagine there is a Dialogflow CX Agent in place for this purpose. The interaction begins with a welcome intent, and following that, the agent inquires about the specific position the hiring manager wishes to fill. The virtual agent, equipped with a parameter, prompts the end-user for their input. For instance, the hiring manager might respond with "Software Engineer." Notably, there not be a dedicated intent associated with this stage of the conversation.
Please explain how we can achieve this using Dialogflow CX API.