Dear Khun Poobeth,
Good day krab.
I am now have a plan to visit Chonburi customers and would want to take this opportunity to make appointment to visit at your office on Nov/29 at 10am
Please advise are you available for me to visit as purposed or let me know the best available time for you so that I can adjust it.
The agenda to visit is to discuss for overall and any comment/feedback (if any)