With a full disclosure. Nobody is sneaking a mileage booking in place of a revenue booking.
But that's not why it came up here.
Because you say so.....
Travel agents don't practically look for Heimish Jewish clients who will only pay 5k if it is a revenue ticket but dear they find out it was a mileage ticket they will run after that TA since he made a little money on him. Unfortunately it is not uncommon for a TA to get a phone call from a fellow Jew something like this...
Customer: Hi, I am looking for a business class ticket to TLV.
TA: Okay, no problem I can work on getting United for $4,000.
Custumer: What? Are you serious? I heard you have
cheap tickets.
TA: That is correct, you know that the flights you want cost 5,000 online, right?
Customer: Yes, but I have tons of Amex points.
TA: This will not help me.
Customer: I also have United miles and I heard that they have availability with a stopover in Europe.
TA: Sure, I can take care of that for you. I charge a $150 booking fee.
Customer: WHAT? I WANNA USE MY MILES, MILES ARE FREE! TA:But how am I suppose to make money?
Customer: Umm I am not sure but that's your business no? You don't want me for a customer? I just want you to use my miles
The OP sounds like he fits this category.