Hi,
Thanks for using WooCommerce Tickets. We do not have a feature to send reminders. It maybe possible to add to the plugin, but it is beyond the support we can provide on the forum to provide that coding (nor do we have that coding).
If you would like to request that feature please head to our UserVoice Page and add your own or upvote that feature as they will increase the chances of it being added to a future version.
http://tribe.uservoice.com/forums/195723-feature-ideas