It's okay to accept someone's invitation.
Randy is working away in his office when he's interrupted by Paul who asks him if he'd like to go out for drinks after work.
Randy wants to respond to Paul's invitation.
Randy tells Paul that he'd love to come, he'll meet him in the lobby after work.
Randy tells Paul that he doesn't want to go out and spend money, he'd rather just be home after work.
Paul is delighted that he has a drinking partner for tonight and tells Randy he's looking forward to it.
Paul is a little bit insulted that Randy has rebuffed him and thinks Randy must live a boring life.