Should I ask HR about expensing flight/items during training?

I’m starting full time in a few days at a pretty well known boutique M&A firm. I’m the first analyst in a new office, and as such they booked corporate housing for me in the home office during training. They told me book my flights however and haven’t mentioned anything regarding meal stipends. I’ll obviously wait for the first few days to get info, but if they don’t bring up the flight, will it be fine to ask HR if they will expense my round flight since it’s all business related? Thanks