17. The computer program product of claim 9 , the stored program instructions further comprising, responsive to determining the at least one language associated with the text of the one or more previous conversations by at least one of the first user and the at least one second user is not detected with the second confidence level that exceeds the second pre-defined threshold, program instructions to retrieve one or more preferred languages of the first user and the at least one second user.
17. The computer program product of claim 9 , the stored program instructions further comprising, responsive to determining the at least one language associated with the text of the one or more previous conversations by at least one of the first user and the at least one second user is not detected with the second confidence level that exceeds the second pre-defined threshold, program instructions to retrieve one or more preferred languages of the first user and the at least one second user. 18. The computer system of claim 17 , wherein the program instructions to retrieve one or more preferred languages comprise: program instructions to retrieve text input in one or more applications by a user; program instructions to determine at least one of: a language setting of the one or more applications, a language setting of the user's one or more devices that include the one or more applications, and a language of the text; and program instructions to determine, based, at least in part, on the at least one of the language setting of the one or more applications, the language setting of the one or more devices, and the language of the text, one or more preferred languages of the user.