Kata

Congratulations! That Special Someone has given you their phone number.

But WAIT, is it a valid number?

Your task is to write a function that verifies whether a given string contains a valid British mobile (cell) phone number or not.

• If the string is a valid UK number, return "In with a chance".

• If it is invalid, or if you're given an empty string, return "Plenty more fish in the sea".

A number can be valid in the following ways:

1. Here in the UK, mobile numbers begin with "07" followed by 9 other digits, e.g. "07454876120".

2. Sometimes the number is preceded by the country code, the prefix "+44", which replaces the "0" in ‘07’, e.g. "+447454876120".

3. And sometimes you will find numbers with dashes in-between digits or on either side, e.g. "+44--745---487-6120" or "-074-54-87-61-20-". As you can see, dashes may be consecutive.

Good Luck Romeo/Juliette!