Here's a sample answer

Dear Mark,

I hope this finds you in great health after the amazing holiday we had last month in Melbourne. I still dream about our treks, river rafting and long drives. In fact, I was amazed to see the photos when they arrived in the mail this morning. It felt as if the memories from my dreams just came in front of my eyes and I was driven in the memory lane for a long time. Thank you so much for sending across those loving pictures and especially our selfies which will always remind me of our friendship. You and Benny were a great host and the kids were as loving as always, which made the vacation more enjoyable and really helped me to de-stress myself from the professional life.

I wanted to send a note of thanks as soon as I landed, but, the apparent work life and pending updates were awaiting my arrival. I had to do loads of over-time and additional shift hours during Sundays to catch up to the new information that had come behind my holiday mode. Moreover, a lot of my personal clients had sent me emails about their services and I had to revert all them on urgent basis. All these official hassles left me with no personal time to think and send you guys a big thank you and lots of hugs for the lovely time.

I think we should all have this kind of stress buster again next month and this time, I would like to be your host. I would like to invite you, Benny, Sandra & Sophie for a week-end getaway in Perth and I will make sure that everyone has a good time including the little ones. There are loads of places to see and kid's places to hang out, which would not only make it enjoyable but also be relaxing from the hectic school life.

Please let me know which dates would be suitable for you and I'll take care of the arrangements here in Perth. Hope you meet you guys soon.

Best wishes and love for all,

John