Abstract: Interaction with various travel content sources is supported using any one of various known GDS cryptic code formats. Travel booking requests made in a selected GDS cryptic format are converted for communication with, e.g., a GDS content source, a direct connect content source, and/or a web-based content source and travel booking responses from such travel content sources is converted into a display format of the selected GDS. In this way, users familiar with one GDS cryptic format can continue to use that GDS cryptic format for interaction with GDS content sources of the same or different format, with direct connect content sources in their expected format, and with web-based content sources in their expected format.