"Oh. Yeah. Hmmm... no not really. Yeah. Yeah. Interesting."
You know the look. The "I want to get the hell out of here look." The "I really just want to be left alone look."
Listening but also thinking about something else look.
The eyes not quite looking at you look. Perhaps past your shoulder or at whatever is across the street look.
"Gotta go. Gotta thing to do" the whole time having a conversation look.
What comes to mind is what the Roshi Said at Sojiji. "We don't really look each other in the eye anymore." After having everyone turn to the person next to them and look at them.