I  need to book a 12:15 taxi at Charlie Chan. 
Of course. I just need to know your destination.
I will be going to cotto.
A black Audi will pick you up at Charlie Chan to leave at 12:15 and get you over to Cotto. Their contact # is: 07928872088
Thank you very much! 
You're quite welcome. Can I assist you with anything else today?
That is all, thanks so much!
No problem at all.