What Book Is This?

Was sitting on the train and overheard two women talk about this book that they were saying was amazing...but I didn't hear them say a name! Wish I had asked! They were saying it was about two women...one who was from Wales. They both go over to New Zealand...one goes over to find a husband. I think the two women meet each other on the way over, but not sure. One of the women is a teacher. Anyone any idea?