A computer-implemented method includes: receiving first sensor data related to a first user; determining locations visited by the first user based on the first sensor data; determining objects with which the first user has interacted based on the first sensor data; determining communication style information of the first user based on the first sensor data; categorizing the determined locations, the determined objects, and the determined communication style information; comparing the categorized determined locations to categorized locations of a second user; comparing the categorized determined objects to categorized objects with which the second user has interacted; comparing, by the computer device, the categorized determined communication style information to categorized communication style information of the second user, the comparing resulting from the second user being within the predetermined distance from the first user; and suggesting to the first user a topic of conversation based on the comparing.