You are adding things that are not in the transcript, which if done under oath is a form of perjury. (Remember, "the truth, the whole truth and nothing but the truth".)
Trump said nothing about doing a favor "first", thereby implying that if the favor was not done, the missiles would not be sold. By adding that word falsely, you change the entire context of the conversation. If you read the transcript, Trump was transitioning from one topic, which was raised by the president of Ukraine, to a different topic that Trump wanted to discuss. Nothing in the text of the transcript indicates a connection between the two topics. And the topic that Trump transitioned to had nothing to do with Biden, but rather dealt with an ongoing investigation into the alleged Ukraine involvement in the DNC "hack", which apparently has been obstructed by some in the previous Ukraine government.
Z: I would also like to thank you for your great support in the area of defense. We are ready to continue to cooperate for the next steps specifically we are almost ready to buy more Javelins from the United States for defense purposes.
T: I would like you to do us a favor, though.