As a native Portuguese speaker I think I’m a good candidate for these job, since I speak Portuguese since I was born and I have talent to speak it fluentlyand clearly. I come with years of experience in translation and language-related work, which has sharpened my conversation skills immensely. This should prove to be an asset in generating natural and engaging dialogs for your speech recognition training. Although I'm not a native of Portugal, my accent is well-pronounced and can provide the variation you might need.
Being aware of the importance this project holds for your speech recognition algorithm, I have access to all necessary recording equipment and can perform both on applications as well as on Skype. Since the task involves two individuals, I am confident that I can source a capable dialogue partner to accompany me. One who matches my level of proficiency in Portuguese and understands the gravity of this project just as much as I do.
I assure you, if given the opportunity, I will not only meet but exceed your expectations for natural and meaningful conversations during our recordings. My past clients can vouch for my professionalism and accuracy in my translations, which spills over into my spoken word as well. So let's collaborate and create an invaluable resource for your language model!