The robot Pepper gives us information in the mall, we ask Siri for the next pizzeria, and service robots are used in nursing: What are the characteristic features of communication with machines? What are the differences between this type of interaction and human-to-human communication? How do we perceive such interactions? Is one artificial, the other natural? In this talk, these and other questions around human-machine communication will be addressed from a linguistic perspective, and different contexts of use will be presented in which the dialogic ability of machines plays an important role. This will be done in two steps: Initially, dialogues with speech assistants will be considered, then the focus will be on interaction with humanoid robots.