@Mamata Kondapally
It sounds like you're experiencing a couple of issues with your bot's response accuracy and back-channeling behavior. To address the first issue with the bot not recognizing the name "JJ" correctly, you may need to adjust the speech recognition settings or train the bot with the correct pronunciation and context.
For the second issue regarding the bot's random back-channeling words, you might need to review the dialogue management settings or the script that controls the bot's responses to ensure it's not generating unintended words.
If you could provide me with more details or access to the bot's configuration, I could give you more specific guidance on how to resolve these issues. Otherwise, if these are issues that require a deeper look into the system, please ask support for more info on this.