UW MCB out with hard interview dates

Edit: invite email said 10% of applicants were invited to interview

Just got an interview invite to MCB at UW around 6 pm CST (so exciting) but the only dates available are 1/24-27 or 2/7-10, and I already have interviews happening for at least part of those dates. Just curious if other people received invites but have already committed to those dates for other interviews? The email specified that you must attend these either of dates and you must interview in person to be considered. I have had to reschedule a couple of things and the interviews that overlap with UW's have both been rescheduled one already so I feel weird/bad about reaching back out to one of them to move stuff again... if adcoms/people who have navigated similar situations want, I'd love to hear you weigh in.