I didn't catch the date but his reference to the 200 Motels album as upcoming puts it in 1970 or 1971.
The interviewer's name is Robin Baxter and she's in over her head. There are a few different ways Zappa tended to deal with interviewers who didn't seem to know what they were talking about; sometimes he'd be playful, sometimes he'd be testy, but he'd always make fun of them.
This one's got Testy Zappa.