SALLY'S PHONE

The book which I read is "SALLY'S PHONE". I explain this story a little.

First, Sally woke up and picked up her phone and answer it. It was Andrew. They promised to meet tonight and Sally went to office by train.

Second, Sally went into a cafe at lunch time because she wanted a coffee. Then Sally met Paul and mutual cellphone put down. They said "Sorry" each other and came back each office.

Third, it was ringing mutual cellphone from unknown people. Then they noticed that mutual cellphone interchanged. Paul phones own cellphone and promised to meet with Sally.

Finally, Sally and Paul met, exchange each cellphone and Sally went to the party with him.

I thought this book is strange and interesting. I want to know continuance of this story, so I try to think it.