[It doesn't take Ignis long to put two and two together to figure out that this person has a speech impairment.

He allows her to tug at his sleeve and pull it into the direction of the water. Once his hand hits the cool bottle, he picks it up.]

You have my thanks.

[He takes a drink of it before pulling his glove off and sticking it into his jacket pocket.]

Do you have other means of communication? Tap onto my palm once for yes or twice for no. You may also draw a question mark for further inquiry.

[He holds his palm out for her to respond.]