Well here we could say, No problem, don't mention it, or welcome... It just depends on the setting and who you're talking to.. If it's really casual you can choose what to say.. if it's a boss, it's better to be more formal and say you're welcome. In a casual setting you can also say it was nothing, etc. de nada to english means 'anything' in literal translation.. but we usually translate it to you're welcome.. because we would read it to be spanish before portuguese.. 'it's nothing' would be fine for a relaxed setting. Not without using a translator.. heh but I do now.. :) and thank you.. I wasn't for sure of the gender of the speaker or the gender of the person you're speaking to..

The correct would be "Obrigada". Depends on the gender of the speaker.

You are welcome. By the way, could you tell me other ways to reply when someone says: "Thank you" because I only know "you're welcome". Is correct to answer "nothing at all" ? I read some time ago a single word in english that have the meaning of "de nada" in portuguese, but I forgot. Do you know this word? Desde já agradeço.

Obrigado! I appreciate it.