How can i create a fake skype chat ?

Hi guys

I'm looking for a way to make a fake skype chat between two peoples

i need to be able to modify the date and timestamp to make it look like the chat been going on for a few days.

So far, i've only found crappy online generator that dont look like the real way skype messenger is on desktop.

Do you you know of any apps/websites or have any advices or tips that could help me build a believable fake skype chat ?

Thank you