Join On Multiple Columns

I have 2 tables, Licenses and Prices as below

Licenses
User Tariff Licensetype
User1 Tariff1 License1
User2 Tariff2 License1
User3 Tariff1 License2
User4 Tariff2 License2
etc

Prices
Tariff LicenseType Cost
Tariff1 License1 £1
Tariff1 License2 £2
Tariff2 License1 £1.50
Tariff2 License2 £2.50

I need to create a query that will produce a table as follows:

User LicenseType Cost

I have tried the following:

Select Licenses.User, Licenses.LicenseType, Prices.Cost
from Licenses
inner join Prices
on Licenses.Tariff = Prices.Tariff
and Licenses.LicenseType = Prices.LicenseType

[Code] ....

But all three output multiple lines for each user.