Buuba

Buuba will help you to chat with other people in the language that you would like to learn.
You can improve your chatting ability in the language that you select.
When you sit on chair at the table, the conversation belonging to the table will open up in "Messages" section and you can message with other people sitting who is at the table.
You can even 1-1 chat with other users by choosing chat request in "People Here" section at the cafes
If the user accepts the chat request, you can message as you wish via the "Messages" tab without entering the cafes, as long as neither party deletes the conversation.
ENJOY!