Sometimes I want to save a twitter conversation... But most of the tools out there require the entire conversation to be using a specific hashtag.

I'd like a tool where you specify a range of time (i.e. the past 15 minutes), and the handles of people involved in the conversation, and it provides a list of all the tweets by all those people within that timeframe, letting you remove with an [x] button all the unrelated tweets.

This seems like a much better solution than hashtags! At least, in the way that I have conversations on twitter. Even hash-tag based conversations, people sometimes forget to add the hashtag, losing gaps of the conversation.

Conversations recorded by replies are buggy also - because the conversation is jumping all over the place once more than two people are involved in the conversation.

Does any tool like this already exist? Anyone want to make one?