B 39, MH Road
Golpark
New Delhi 110077

Dear Tina,
I hope you are well. The summer vacations have begun and I would love to spend time with you. My family is hosting an informal gathering comprising of close relatives and friends next week. We would be very happy to see you and the other guests would get a chance to enjoy your charming company. I hope to hear from you soon.

Yours affectionately

Julia

What is the dominant tone of the above letter?