Remove "orphaned" meetings in RoomMailboxes

When users are leaving the company there should be a "phase out" routine to be followed with different IT tasks to be perfomed (below is just an example);

• Log and revoke system access and permissions
• Hand over data to manager and/or other owners
• Delete all other data (mail, home folders, etc)
• Cancel meetings (and/or transfer them to other responsible organizers)

However sometimes users that have left the company haven't canceled meetings and you need to remove the bookings from the RoomMailboxes (or EquipmentMailboxes) in Exchange.
Powershell to the rescure:

# Define email to search for
# Requirements
# Connection to Exchange (online) using Powershell
# Administrator account with "Mailbox Import Export" role in Exchange (online)

# Task flow
# Lookup primary email address for user
# Search meetingrooms for meetings (if needed)
# Delete meetings from meetingrooms (backup if needed)

#Search in Powershell (output in console)                               
get-mailbox -recipienttype roommailbox | search-Mailbox  -SearchQuery 'From:user@domain.com AND kind:meetings' -EstimateResultOnly -Verbose | ft identity,success,resultitemscount

#Search in Powershell (output to targetmailbox)                               
get-mailbox -recipienttype roommailbox | foreach { search-Mailbox $_.alias -SearchQuery 'From:user@domain.com AND kind:meetings' -Verbose -TargetMailbox Administrator -TargetFolder "SearchAndDeleteLog" -LogOnly -LogLevel Full }

#Delete                
get-mailbox -recipienttype roommailbox | search-Mailbox  -SearchQuery 'From:user@domain.com AND kind:meetings' -DeleteContent -Force -Verbose

#Delete (with moving messages) - enter correct targetmailbox and folder
get-mailbox -recipienttype roommailbox  |  foreach { search-Mailbox $_.alias -SearchQuery 'From:user@domain.com AND kind:meetings' -DeleteContent -Force -Verbose -TargetMailbox Administrator -TargetFolder "BackupFolder" -loglevel Full }