Thanks, but I'm just your waiter tonight.
5 seconds sound clip from the Ratatouille movie soundboard.
You can hear this line at 01:37:30 in the Blu-ray version of the movie.
Quote context
[...]
- Ratatouille? They must be joking.
- Mmm.
- Who cooked the ratatouille? I demand to know!
- Thanks, but I'm just your waiter tonight.
- Then who do I thank for the meal?
- If you wish to meet the chef, you will have to wait until all the other customer have gone.
[...]