On behalf faculty of allied health sciences chulalongkorn university[name of organization], I would like to invite you to speak on laboratory safety training on [18 and 19 may 2016 at 9.00, and given your expertise in that subject matter, we hope that you will be able to join us for the event.
We would be honored if you would accept this invitation to join us for this event. Please let me know at your convenience if you will be able to join us for the event, and please do not hesitate to contact me if you have any questions about the event.
Sincerely,
Name
Title (President, IPLS, etc.)