Closed on first report or thanks for contact support email or have a check box not to send a notification on ticket creation

As a Helpdesk employee who receives calls for IT support, some of the support issues can be solved over the phone/remoting into their computer and helping the user. With that being said, a lot of the calls can be finished on the first call, but we still want to document the call and fixes so that we may have a history. With the way this is done currently in ML WOs, if the user is assigned the ticket they will receive a notification for the ticket being created, and then a ticket for completion. Users do not like receiving these emails, and if they get too many emails they start to just ignore these emails and/or start marking them as spam. This can cause an issue in communication as some users will ignore what is put in tickets not knowing that they are being communicated through the Work Order system. To get around this issue for now we have been assigning the ticket to ourselves as the requester, but that makes tracking tickets by user a bit difficult.
With that being said we would like a way to make only one email alert to the user for the ticket, while also being able to assign the ticket under the user for documentation purposes. This can preferably be done by either having a feature that the closes the ticket on first creation, or having a way to turn off the notification of the creation of the ticket being sent to the user.
We only want one email sent to the user for tickets that were solved over the phone. That way the user knows that it is being documented and that the support for that issue has been completed. This can be done either by only having them see the completed notification, or maybe an auto generated email when a ticket is closed on first report that can be set to something we would like. Something like "Thanks for contacting the helpdesk, if the issue still persists contact us back and we will reopen the ticket. Or if you have another issue contact us at ... and a new ticket will be created for that issue."

TLDR: Way to send only one notification to the users when they call the helpdesk and we solve their issue over the phone, instead of two from creation and completion of the ticket.