Liked it! Nice layouts, use white space well, story was clear and I wasn't confused about anything going on.
Color choice was also good, but could use some more value study. Remember that you can block the viewer's eyes to foreground or background just by swapping high- and low-contrast areas. Right now the comic reads as very casual and flat (possibly intentionally) but if you wanted to get into more dramatic storytelling, knowing how contrast works in different types of lighting can give you an edge with your storytelling that not many other comic artists have.
Background seemed a little sterile, so consider adding silhouettes of other people hanging out in the same area. Like a barista handing a drink to a random customer, or people playing on their laptops. Plants too, animals, bits of junk, textures, wallpapers, etc, make your setting a character!
And above all, MAKE THE COMIC