Hi Kyamax...

First thing to check is going to be the AERATOR at the end of the faucet spout. Remove the aerator and then run water. If water flows then you should only need to clean the aerator and replace it and should be all set.

If that is not the issue then you can also check to see if the pipes are frozen, if weather conditions suggest this possibility, by removing the hoses from the faucet and then checking for water flow out the shutoffs. If you are frozen, reconnect the hoses and open the faucet and then start to use a hair dryer to start thawing the pipes out.

Finally, if a freeze up is not the issue then you may need to disassemble the faucet and clean out the cartridge inside the unit to restore full flow.

Let me know what you think here...

Mark