Fetching all Activity Ids in a Teams

I am developing a Microsoft Teams Conversation Bot. I want to fetch all activity Ids for the bot and delete those using below code:

for (let i = 0; i < activityIds.length; i++) {

// deleteActivity(): deletes an existing activity in the conversation.

await turnContext.deleteActivity(activityIds[i]);

}

Is there a way to fetch all the activity Ids for the Bot?