Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Dear Shashi Vishwakarma,
Good day! Thank you for reaching out!
Based on your description, once user B clicked "contact your administrator", an email is immediately sent to the admins and the request has already been submitted. If user A has not yet reset the password and user B recalled their password and no longer wants to reset it, user B will have to contact user A and request that they ignore/do not do the request.
->User B can't reverse this request.
In case you have any further queries, please let me know.
Best Regards,
Ashraf.