15. A computer system for automating multilingual indexing, the computer system comprising: one or more computer processors; one or more computer readable storage device; program instructions stored on the one or more computer readable storage device for execution by at least one of the one or more computer processors, the stored program instructions comprising: program instructions to receive text of a first conversation between a first user and at least one second user; program instructions to detect at least one language associated with the text of the first conversation; program instructions to determine whether the at least one language associated with the text of the first conversation is detected with a first confidence level that exceeds a first pre-defined threshold; responsive to determining the at least one language associated with the text of the first conversation is not detected with the first confidence level that exceeds the first pre-defined threshold, program instructions to retrieve text from one or more previous conversations between the first user and the at least one second user; program instructions to detect at least one language associated with the text of the one or more previous conversations between the first user and the at least one second user; program instructions to determine whether the at least one language associated with the text of the one or more previous conversations between the first user and the at least one second user is detected with a second confidence level that exceeds a second pre-defined threshold; responsive to determining the at least one language associated with the text of the one or more previous conversations between the first user and the at least one second user is detected with the second confidence level that exceeds the second pre-defined threshold, program instructions to analyze the text of the first conversation using the at least one detected language associated with the text of the one or more previous conversations between the first user and the at least one second user to create one or more index terms, wherein index terms are included in the text of the first conversation; program instructions to index the one or more index terms, wherein indexing serves as a mapping from the index terms to the text of the first conversation as automating multilingual indexing; and program instructions to store the second confidence level of the at least one detected language associated with the text of the one or more previous conversations between the first user and the at least one second user associated with each of the one or more index terms.
15. A computer system for automating multilingual indexing, the computer system comprising: one or more computer processors; one or more computer readable storage device; program instructions stored on the one or more computer readable storage device for execution by at least one of the one or more computer processors, the stored program instructions comprising: program instructions to receive text of a first conversation between a first user and at least one second user; program instructions to detect at least one language associated with the text of the first conversation; program instructions to determine whether the at least one language associated with the text of the first conversation is detected with a first confidence level that exceeds a first pre-defined threshold; responsive to determining the at least one language associated with the text of the first conversation is not detected with the first confidence level that exceeds the first pre-defined threshold, program instructions to retrieve text from one or more previous conversations between the first user and the at least one second user; program instructions to detect at least one language associated with the text of the one or more previous conversations between the first user and the at least one second user; program instructions to determine whether the at least one language associated with the text of the one or more previous conversations between the first user and the at least one second user is detected with a second confidence level that exceeds a second pre-defined threshold; responsive to determining the at least one language associated with the text of the one or more previous conversations between the first user and the at least one second user is detected with the second confidence level that exceeds the second pre-defined threshold, program instructions to analyze the text of the first conversation using the at least one detected language associated with the text of the one or more previous conversations between the first user and the at least one second user to create one or more index terms, wherein index terms are included in the text of the first conversation; program instructions to index the one or more index terms, wherein indexing serves as a mapping from the index terms to the text of the first conversation as automating multilingual indexing; and program instructions to store the second confidence level of the at least one detected language associated with the text of the one or more previous conversations between the first user and the at least one second user associated with each of the one or more index terms. 16. The computer system of claim 15 , 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 between 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 text from one or more previous conversations by at least one of the first user and the at least one second user; program instructions to detect 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; and program instructions to determine 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 detected with a third confidence level that exceeds a third pre-defined threshold.