After a moment, Cortana reaches down and pulls a ...thermos? from her purse. Don't get excited, she didn't bring anything special with her - at least, not anything to share with other people. It's literally just chilled distilled water, as will be revealed when she unscrews the cap and pours her drink into the lid - it's one of those where the lid is designed to double as a cup.

"I'm ...alright. Still getting used to the new body." She takes a sip. "And you?"