Need to associate columns between 2 spreadsheets as follows;

[tomsk111]

I have 2 spreadsheets.
Columns are as follows:


Sheet1:

 A                           M
Company Name |  Phone Number
ABC     333 333 3333
DEF     444 444 4444
HIG     555 555 5555
HIJ     666 666 6666

Sheet2:

A                J
Name  |  Phone Number
John     555 555 5555
Bob      333 333 3333
Tom      666 666 6666

For Phone numbers that exist in Spreadsheet 2, I want to add another column of Name that match the Phone number.

Basically I want to associate Names (john bob tom) to the relevant Company Name using the matching Phone numbers.

If it matters, each spreadsheet has 1000's of names and companies. Also some names and company name's may have NO phone number

How can this be done?