Yes. Or simple theft. Either would do.Put simply,it's obtaining by deception to dishonestly make a statement which you know to be a lie in order to get someone to part with money and they then pay because of it ,when you intend to keep the money (or spend it ). This person has, at some point, done exactly that. (Even if they were genuine to start with, at some point they were dishonestly lying by asking for and getting money when they had decided not to book any trip or apply the money to one)
Simple theft is where someone has received money, genuinely or not, honestly or not, and decides to keep it or spend it for some other purpose than that for which it was handed to them.So if a cashier receives money, but later decides to keep it for themselves and takes it, that's theft. The same applies to treasurers of Christmas Clubs who take the money over months, intending to use it properly as the donors wish, but then disappear with the takings on December 23rd ! At the very least , this is just such a case.