A dialogue to die for

The following conversation actually took place between a guy working at Starbucks (a barista), and an asian woman trying to place an order:

Barista: How may I help you today?

Asian: One green tea frappuccino

Barista: Would you like anything to eat with that?

Asian: No

Barista: okay, so that's one green tea frappuccino

Asian: Right

Barista (calls out to other barista): One green tea frappuccino

Asian: Right!

Barista (talking to asian again): Right, a green tea frappuccino

Asian: Right

Barista: OK, so we have one green tea frappuccino

Asian: Right!

Barista: Right, a green tea frappuccino

Asian: Right! 

Barista: Right, one green tea frappuccino!

Asian: RIGHT!

Barista: Am i not understanding you correctly? Just to make sure your order's correct- One green tea frappuccino, right?

Asian: Yes!

Barista: OK, good. One green tea frappuccino.

Asian: RIGHT!!!!

Barista: Right, a green tea frappuccino

Asian: RIGHTTTTT!!!!

Barista: Ok, ma'am.