Sending more Personalized notifications in autoreply to customer e.g FirstName${issue.reporter.name}

[Swapnil_Tandle]

I want to send out a personalized message to customers via templates in Jira service management. Still, by default we do have ${issue.reporter.name} field and it by default takes the login name entered by the customer e.g FullName, is there a way to extract the first name only is there any variable available like  ${issue.reporter.firstname}? or ${issue.reporter.lastname} or a way to extract it from name field.

Please suggest