Hello @Oleksandra Masych
Thanks for using Microsoft Q&A platform! I am sorry I think your scenario can not be supported well now as below change -
As of October 31, 2019 the Skype channel no longer accepts new bot publishing requests. This means that you can continue to develop existing bots connected to the Skype channel, but your bot will be limited to 100 users. You will not be able to publish your bot to a larger audience. Read more about why some features are not available in Skype anymore.
https://support.skype.com/en/faq/fa12091/why-are-some-features-not-available-in-skype-anymore
I will highly recommend you to check with Skype team for the delay here
For conversational bot, you may want to consider Teams - https://learn.microsoft.com/en-us/microsoftteams/platform/bots/what-are-bots
I hope this helps!
Regards,
Yutong
-Please kindly accept the answer if you feel helpful to support the community, thanks a lot.