Wǒ xiǎnɡ chūqù chīfàn.

我想出去吃饭。

I'd like to eat out.

Notes:

我(wǒ): I

想(xiǎnɡ): would like to

出去(chūqù): go out

吃饭(chīfàn): have meal

Example:

A:我想出去吃饭。

    Wǒ xiǎnɡ chūqù chīfàn. 

    I'd like to eat out.

B:好。

  Hǎo.

   Ok.