Has anything like this ever happened to you?
You arrive at a main train station in a foreign country. You have a bad cold and a high fever. You proceed to lose your wallet containing all your ID cards and money. Desperate, you rush to the information counter and explain your plight to the person there. I forgot to say that it is late at night and the name of your youth hostel, which you do not remember, is written on a piece of paper in your wallet.
This is what happened to my wife, before we were married, when she arrived in Tokyo by herself many years ago.