The Duenna tells Cyrano that Roxane has sent her to summon Cyrano to Roxane’s chambers tomorrow after she’s come back from church. Cyrano, visibly excited by this news, tells the Duenna to tell Roxane to meet him at the pastry shop belonging to Ragueneau. The Duenna nods and leaves.
Clearly Cyrano thinks there’s a good chance that Roxane loves him back—his excited demeanor is just the opposite of his droll affect during his duel with Valvert. For once he’s not putting on a show, and can’t conceal his real emotions and vulnerabilities.