How to get the conversation id/any unique id for each chat comes to servicenow

[SumitB]

I am working in integrating one of our product with Servicenow on a chat runtime. 

So, for the purpose we need to know about the conversation id/ interaction id of each such chat going between the end user and agents. Is there any APIs from which I can directly get the data based on the application scope, queue name or any other input?

In which table do we store all the ongoing chats ? 

[PrasoonR]

you can get it from interaction table with api

api/now/table/interaction

and params 

params={
    'active': 'true',
    'opened_for': user_sys_id,
    'sysparm_fields': 'sys_id',
    'sysparm_limit': 1,
    'sysparm_query': 'ORDERBYDESCopened_at',
},