So sorry to ask for a different appt . on such short notice . I 'm scheduled for 4 - 23 at {time} and I ca n't make it . I can do 4/24 at {time} or later or any time at all 4/24 all day long . I 'm free all day We 'd . Just in case you 're doing Wednesday by chance . If we have to wait I can do Tuesday 4/30 at {time} or later .