Is it? [He pauses again, honestly surprised. He hadn't expected that to be the case.]
I really don't know. The name suddenly came into my mind while I was speaking to you. [He tries to dredge up some connected memory, but he draws a frustrating blank. He shakes his head.] No, I don't remember anything else.
[action]
I really don't know. The name suddenly came into my mind while I was speaking to you. [He tries to dredge up some connected memory, but he draws a frustrating blank. He shakes his head.] No, I don't remember anything else.