Is there any way I can delete individual text messages?

Is there any way I can delete individual text messages?

I have a Huawei U8850 running Android 2.3.7 and want to manage my text
messages more efficiently. At the moment the only delete options I can see
are to delete all thread or the current thread.
However, what I want to be able to do is delete individual text messages
(both received and sent). The conversation with my wife (say) will include
messages that are just acknowledgements of other messages being received
or ones that are no longer relevant (shopping lists, say) and I would like
to get rid of those, but keep the more important messages (at least for
the time being).
Is there any way to do this or am I stuck with either keeping the entire
conversation or deleting it all?