Email with the text "We have 11:30 or 3:30 tomorrow, what would work better?" And suggested auto responses: "Let's do 10:30, Let's do 2:30, Let's do 9:30"
https://cdn.masto.host/frontendsocial/media_attachments/files/109/627/338/470/766/510/original/318655a002641ad6.png