Firstly Log on to Office 365 Power Shell : When logged on copy and paste the following

Get-Mailbox -ResultSize Unlimited | Get-MailboxAutoReplyConfiguration | Where-Object { $_.AutoReplyState -ne "Disabled" } | Select Identity,StartTime,EndTime,AutoReplyState

Or export all the detail to a CSV .

$licensedAccountinguserList = Get-MsolUser -All | where {$_.IsLicensed -eq $true} | Export-CSV “C:\sample\sample.csv”