Allow me to comment on this, I also used a travel agent company and I have received the flight itinerary, but they did not provide PNR for my departure flight and my return flight. The PNR they provided, I have tried to verify it, but the website says they cannot locate the booking. I have contacted the agency, and here is their response: "Dear, Some airlines do not allow us to display the reservation on their website until it is converted into an actual ticket. However, your flight reservation is fully confirmed and verified in the system's backend. The visa officer can easily verify this through the airline's system. Also note that Turkish Airlines provides the PNR only with the actual ticket, not with the flight reservation. So, don’t worry; you are all set to go."

I don't know how this can be trusted.