A dummy ticket seems to be an actual airline ticket and has a real PNR, booking code, or booking reference number. You may confirm them on various airline websites by using the "Manage my booking" or "My trips" sections. Another name for dummy tickets that cost INR 350 or $5.
Dummy tickets are essentially hold tickets that have not yet been issued. On the airline's website, you can see the included live PNR. The airline website's Manage My Booking or Manage My Trip features will be used to verify it. It is useful for short-term needs like finishing a visa application or verifying return. Whoa! For a little $5 | ₹350, you may have the dummy tickets in 10 minutes.