When people meet someone from another country, especially from over seas, there is interest and intrigue of that place. What are the customs, food, transport, politics...all kinds of topics that can create endless conversations. When someone talks to you, enjoy their company, a chit chat over tea or coffee in a cafe could turn into an invitation to the persons home for dinner with the family, and maybe a free nights sleep. Show interest in what peoples lives are about, what they do and what they are about. It is amazing the hospitality that people will show a guest from another country.
this will not happen everytime by any strech, but it could and has happened. just don't be paranoid of all the strangers you meet, and show interest.
( If you think that something is not right about the situation, then don't do it, keep the conversation at the place you met and leave it at that.)
this type of thing is not for everyone, but its a great way to soak in the home culture.