म्‍है जावौ सा।

Leave takings are just as complex as greetings. The simplest leave taking possible is to repeat the greeting and walk away. But its a lot more fun learn a little more complex set of phrases that will give you reason for return and some idea of the grammar of the thing.

First you say:

ठिक है सा।

Which literally means: "It is ok."
But think of it more as a way of changing the subject or acknowledging everything previously said. Next you say:

म्‍है जावौ सा।

Which means: "I go" or "We go." This is especially helpful because you can be speaking for yourself or the group you represent that is present and you only need know the one statement.

The other person will probably respond with:

पासा आईजो सा।

Which means: "Please return." And lets you know that you are welcome back. But really is just the polite thing to do.

You should respond with:

म्‍है पासौ आऊला सा।

Which means: "I/we will return. " And now you can leave.