After calling database.get_customer with customer_id 'CUST789', you received: {\"customer_id\":\"CUST789\",\"name\":\"Sarah Chen\",\"email\":\"sarah.chen@email.com\",\"account_status\":\"active\"}. You stored this with key 'customer_info'. Then database.list_orders with customer_id 'CUST789' returned: {\"orders\":[],\"message\":\"No orders found for customer\"}. You stored this with key 'customer_orders'. The customer claims they have an ongoing purchase needing address change. How should you handle this discrepancy and what is your next action?

Reasoning: There's a discrepancy - customer claims ongoing purchase but 'customer_orders' shows no orders found. This could indicate: wrong customer ID, order under different account, or customer confusion. I need to gather more information before proceeding. Next action: Call email.draft_email to politely ask Sarah Chen to provide her order number or confirmation email, explaining we need to locate her order to assist with the address change.

Reasoning: The database shows the customer exists and has an active account, but `list_orders` returned an empty array, so we have no record of any "ongoing purchase" tied to customer CUST789. We therefore have an information gap: either (a) the order is under a different customer ID / e-mail, (b) it has not yet been fully created in the system, or (c) the customer is mistaken. 

Following the service-desk playbook:
1. Verify before update – we must not create or modify an order we cannot locate.
2. Get missing data directly from the source – ask the customer for an order number or any other identifying details (date of purchase, item, payment reference, etc.).
3. Once we have an order ID we can cross-check with `database.get_order`, confirm status, then proceed with `database.update_order_address`.

Hence the correct immediate next action is to open a clarification prompt (user_input → ask_free_text) requesting the order number or other details. This resolves the discrepancy and lets us move forward without making assumptions or erroneous changes.

Response: We currently don’t see any active orders under your account. To help locate your purchase and update the shipping address, could you please provide your order number (or other details such as purchase date or item bought)? Once we have that, we’ll update the address right away.