I don't have beer for a beer dip recipe, what could I substitute for the liquid and seasoning to get a good flavor?

The recipe calls for a cup of beer, cream cheese and shredded cheddar cheese. I want to adapt the recipe a bit for a cheese sauce, so I need it to be more liquid, less stiff. I do have seltzer water that I could substitute for the liquid, and I know I can cut back the cream cheese to make it more fluid, but I can’t think of a seasoning to add to perk it up a bit. Do you have any suggestions?