Chaining function calls

> Please provide us with the following information:
> ---------------------------------------------------------------

### This issue is for a: (mark with an `x`)
```
- [ ] bug report -> please search issues before submitting
- [ x] feature request
- [ ] documentation issue or request
- [ ] regression (a behavior that used to work and stopped in a new release)
```

### Minimal steps to reproduce
> Hello, for the time being, it seems that the model can determine which function to call but it seems to be limited to only one function, unless I missed something. In the scenario where I split the calculator into four distinct functions (add, divide, substract, multiply) and I would input the following query:

`Calculate the total of 10/2 multiplied by 3`

The model will determine that _divide_ must be called, but it will not understand that _multiply_ must also be called. Is it something that will be available?

### Expected/desired behavior
>
`{
"role": "assistant",
"function_calls":[ {
"name": "divide",
"arguments": "{\n\"num1\": 10,\n\"num2\": 2\n}"
},
{
"name": "multiply",
"arguments": "{\n\"num1\": 5,\n\"num2\": 3\n}"
}
]
}`

> ---------------------------------------------------------------
> Thanks! We'll be in touch soon.