Need Help Creating an Auto-Responder for New Bookings in Lindy

Hey guys, very new to Lindy and trying to get my bearings. I’m wondering if I can get a hand. I’m trying to build a simple Lindy that will automatically respond to any emails that contain “New Booking” or “New Enquiry” but I’m not having any luck. Does anyone have any ideas? The condition is “if the email is unopened” Can supply more info if needed.