I need to attach a female style garden hose attachment to a nearby water supply (NYC Apartment - no access to a hose). My bathroom sink cold line is a male 3/8 compression style fitting. I went to home depot and got a 3/4 x 1/2 bushing and a 1/2 x 3/8 FIP fitting. (1st pic). But the 3/8 FIP fitting wont thread onto 3/8 compression fitting. It's a different thread type. What can I get to make the connection?
Another option is to use a compression style adapter and connect directly to the clear tubing for the water connection (2nd pic). But I can't get the ferrule into the tubing.
Another option is to use a compression style adapter and connect directly to the clear tubing for the water connection (2nd pic). But I can't get the ferrule into the tubing.



