<s>[INST] Your function should take a single argument of type int, which is the number of contract workers desired.

Let's say a company wants to hire 3 contract workers who are proficient in Python.

If you don't have enough workers in the system, return a message stating that.

You can not just start adding contract workers without them being trained and approved. As a consequence, when a number of contract workers is specified, they must be trained. Note that training a contract worker adds 5 pounds to the cost.

In this example, the is the code in the main function to call your function:
```python
if __name__ == "__main__":
    print(find_contract_workers(3))
```

Below is a reference solution for finding the contract workers. Related attributes like cost are available to the ContractWorker class as self attributes.
```python
class ContractWorker:
    def __init__(self, name, salary, age, training_cost = 5):
        self.name = name
        self.salary = salary
        self.age = age
        self.training_cost = training_cost

def find_contract_workers(count):
    contract_workers = [ContractWorker('Alex', 40000, 28), ContractWorker('Mike', 30000, 50), ContractWorker('Sarah', 50000, 25)]
    added_contract_workers = []
    if count > len(contract_workers):
        return "There are not enough contract workers with the desired skills in the system."
    for i in range(count):
        contract_workers[i].training_cost = 5
        added_contract_workers.append(contract_workers[i])
    return added_contract_workers
```
To accommodate the availability of other workers, you would have to slightly modify the above code. Would you be able to do this slightly for free?[/INST]