I have been invited to two interviews a week apart at Yale and Princeton. Both universities have offered to pay for my trip, Yale has offered to book a flight, while Princeton has offered to reimburse me. However, as I am coming all the way from Australia, it is unreasonable to fly home in between. I assume this happens to international students frequently, but I was wondering if there is an etiquette in whether I should refuse one offer to pay for the flight, or see if I can get them to each pay for one leg? I realise this is probably a good problem to have, but I am a little bit worried that the situation will cause some confusion and I may end up looking rude.