Dear Student,

First off, thank you so much for your support, and for allowing me to help you improve your English skills!
Today, I would like to notify you about my upcoming schedule for April. I will be taking a holiday to the United States from April 7th until the end of the month. Therefore, I will be available for lessons again on May 3rd. 

If you have a lesson pack, please let me know if you would like for me to extend it. Thank you, and I hope you have a great spring. See you in May! 

Happy Learning,
Brian