Or you say to a navy/marine field: “clearance delivery XYZ123 to KXYZ ready to copy”It's the phrase that Clearance Delivery say to you, not you to them. You're supposed to say to them, "Pawtucket Clearance Delivery, Navy [callsign] IFR to KBFE." That's it. They reply either, "Navy xxxx, you are cleared to KBFE as filed, climb and maintain [etc.]" or "Navy xxxx, your clearance is on request."
Unfortunately, pilots saying the phrase "clearance on request" is in a lot of Navy flight training manuals. The Air Force is guilty of it too. We sound like a bunch of dumbasses when we say it and we don't even know it.
And they immediately reply “XYZ123 I have your clearance advise ready to copy”
Every damn time. Never deviate from the script.