On the heels of the report that Apple purchased chip maker Intrinsity, Apple appears to have made another purchase: Siri, a personal assistant for the iPhone.

According to a pre-merger notification submitted to the Federal Trade Commission, and first noticed by Robert Scoble, the transaction was filed yesterday.

Siri brings a conversational interface to the iPhone which allows you to ask it to perform tasks for you such as find a French restaurant nearby and book a table, look up movie listings, order a taxi, or look up the phone number and address of a local business.You can read our full review of the app here. .