Game of Thrones, Season 2

[After Jaqen has stated he cannot kill Tywin Lannister in time]

Arya Stark:
You promised you'd help me.

Jaqen H'ghar:
Help was not promised, lovely girl. Only death. There must be others. Give a name, any name.

Arya Stark:
And you'll kill them? Anybody?

Jaqen H'ghar:
By the Seven New Gods and the Old Gods beyond counting, I swear it.

Arya Stark:
Alright. Jaqen H'ghar.

Jaqen H'ghar:
A girl gives a man his own name?

Arya Stark:
That's right.

Jaqen H'ghar:
Gods are not mocked. This is no joking thing.

Arya Stark:
I'm not joking. A man can go kill himself.

Jaqen H'ghar:
Un-name me.

Arya Stark:
No.

Jaqen H'ghar:
Please?

Arya Stark:
I'll unname you.

Jaqen H'ghar:
Thank you.

Arya Stark:
If you help me and my friends escape.

Jaqen H'ghar:
This would require more than one life. This is not part of our bargain.

Arya Stark:
Fine, Jaqen H'ghar.

Jaqen H'ghar:
A girl lacks honor. [Arya shrugs] If I do this thing, a girl must obey.

Arya Stark:
A girl will obey.

Jaqen H'ghar:
A girl and her friends will walk through the gate at midnight.