Choose the correct words to help the tech support agent figure out what the customer is trying to do.

I need to know what you are using this strange software for, and exactly who you were talking to when your computer caught fire.

I need to know what you are using this strange software for, and exactly who you were talking to when your computer caught fire.

• "What... for?" is a common conversational way to ask "Why?" or to ask about the purpose of something.

• "Who... to?" is used to identify the person receiving an action, matching the verb phrase "talk to someone."