I have a 2007 Honda Civic and this is the 2nd time the dealer wants to recharge it and add freon.
I've had this done last year and now again, the AC doesn't get cold. Today, the dealer claimed to put in a green dye that will allow them to locate a leak (if any) and I'm to use the AC for the next couple of days and go back to the service dept. for them to try to locate a leak.

Does this sound OK especially the part with the "Green dye"?

I really would appreciate some direction. Thanks!

Totally normal.