Task-oriented dialogue about: restaurant

I'm looking for a restaurant called graffiti.
Graffiti is an expensive British restaurant in the west. Would you like me to book it for you?
Yes book for 7 people on tuesday for 15:30 please.
I'm sorry, that booking was unsuccessful. Shall I try for another day or time?
That's too bad. Please book any other restaurant that is in the west and expensive.
Okay, I've booked you at Travellers Rest, which also serves british food. Your reference number is FOEJZBZI . Anything else I can help with?
That is all, thanks.
Have a good day
Thank you, you, too.
Thank you and enjoy your meal.