This study aims to investigate the effects of information delivery types on users' perception toward the robot. We executed two experiments to explore appropriate information delivery types in each situation. In the first study, we compared which type of information delivery is suitable to the situation that the robot conveys environment states. In the second study, we examined a proper information delivery type in the situation that the robot conveys its internal states. We conducted a 3(information delivery types: speech vs. reflexive cue vs. none) within-participants experiment (N=24) both in the first study and in the second study. The results of the study showed that participants perceived a robot with the reflexive cue as more anthropomorphic and animate than one with speech and one without response. In addition, participants evaluated the service of the robot with the reflexive cue more positively than the robot with speech and the robot without the response in the both studies.