He knows Arthur's after information, in retrospect he should've expected it — Arthur's really easy to set off that way — but he decides to act as if Arthur's just asked to hook up instead. As much as he can with this many people around anyway.

"Well I need to pick up the dog, but after that..." He shrugs a shoulder, lingering a little on his words, "I could pencil you in."

Unless Arthur wants to come on a trip to get the dog too.