Hi. I'm new here and not sure where to post this, so here goes...

I book a lot of travel for a corporate client, and their travel plans change a lot. I try to book refundable airfare because of my clients' uncertainty a couple weeks in advance. I'm wondering if when my client firms things up and commits to the travel, if I then cancel the refundable ticket a few days before, then buy a non-refundable since the plans are not likely to change. Is this a loophole to get a better fare? Do the airlines frown upon this? Any repercussions?

To be clear, want to buy a refundable ticket in advance. then when client is not likely to cancel, I then get a refund of original ticket and purchase the same flight as non-refundable a few days before. Even if the fare goes up, it will still likely be cheaper than original refundable ticket.