Very often in public transport are such amateurs talk, who are trying to drag the conversation. If you do not want to chat, take note of how delicately move away from the imposed contact.
In anticipation of something, for example, in line at the clinic, in transport - bus or train, be sure to meet people who do not mind talking about life. If such an interlocutor chose you and trying to drag the conversation, and you are not disposed to dialogue, take a note on the 3 ways that will save you from unwanted conversations.
Telephone. You can get the phone and make it appear that you need to call someone, or really, dial someone from friends or relatives, with whom communication will take place with great pleasure, than contact with a stranger.
Headphones.Wearing headphones, you give a person to understand that it would not communicate. If you do not have headphones, you can refer to something that is very tired, and just close your eyes.
Book.Reading the book will show that you are not configured to conduct sincere conversation.
Be sure to ask, about some things you can not talk, so as not to hurt yourself.