I know this is your cab, but I am desperately late for a plane and I was wondering if I could I appeal to your good nature and ask you to let me have it.
8 seconds sound clip from the Planes, Trains & Automobiles (1987) movie soundboard.
You can hear this line at 00:04:30 in the Blu-ray version of the movie.
Quote context
[...]
- I'll see you in Chicago, John.
- Taxi!
- I don't have a good nature. Excuse me.
- Come on!
- Could I offer you $10 for it? 20. I'll give you $20 for it.
[...]