"Okay. Yeah, I don't... know that it would be a good idea." She said, hesitating just for a moment, trying to make up for any awkwardness that would come from rejecting the offer from Roy (which probably had been another part of SHIELD's nefarious plan to use him to ask her about it).
"Just tell them that..." She thought for a moment then started to grin, "Tell them that Black Canary was totally inhospitable and when you tried your best to hold a decent, normal conversation with her she flew completely off the handle. And there was an awesome fight-- you can insert stories of your awesome here, liberally-- but then she ran away so that you wouldn't kick her ass anymore." She said, winking at him.
"But while you're in Gotham- you want to suit up and go for a ride with me?" Because honestly, how much crime-fighting did he really get under his belt these day with his responsible SHIELD-ness.