Dear Nayomi,
Hope you are keeping fine. I am glad to hear that your daughter is completing 8 years and I can't believe that time has passed so fast. Thank you so much for the invitation and for thinking of me on 
this
 very special day of your life. I would love to be a part of it, Linking Words
,,
Change the punctuation
apply
unfortunately
 I will not be available on the 30th of October.
The reason that I will not be able to attend Add a comma
,unfortunately
this
 party is that I have a programme at the office that I have to attend outstation. Linking Words
This
 is scheduled for 5 days at the end of the month and I will be responsible for a few areas as I am part of the organizing committee. I am really sorry about Linking Words
this
.
Linking Words
However
, as soon as Linking Words
this
 event is over I will be free to take a few days off and would love to visit you if  you are Linking Words
also
 free. Please let me know. In the interim, kindly share with me a few photos of the birthday party too.
Hope all goes well and let me know if you need any assistance in planning too. 
Give my regards to all at home. 
Let's catch up soon!
Stay safe
AndreaLinking Words