I need help finding a very cheap restaurant located in the centre, can you help me?
What type of food are you looking to eat?
I am looking for a restaurant in the centre area in the cheap range. I would like a table for 7 people at 12:30 on Wednesday.
There are 15 such restaurants. I'd suggest the Dojo Noodle Bar which serves Asian Oriental food. Would that work for you?
Yes, the Dojo Noodle Bar sounds perfect. 
Booking was unsuccessful. Want to try another restaurant?
Sure, find me something else.
I was able to book a table for you at Charlie Chan Chinese restaurant on Regent Street.  Reference number Z3FWSA48.  Will that be all?
Yes thank you for your help.
Yes. Thank you very much!