I'd like to find an expensive gastropub, should you have such a beast.
I show 3. they are in the expensive price range. 2 are in the centre and 1 is in the east. May I book a table for you?
Yes, can you find out if any of them have an opening at 11:45 on Wednesday for 6 people?
Yes, Backstreet Bistro has an opening for 6 people at 11:45 on Wednesday.
Please book it them and please let me have the reference number when you are done.
It turns out, they were all booked, but I was able to get you a table at the slug and lettuce with reference number PGV6HF9F. May I help with anything else?
No but I will try that place.
Have a great day!
Thank you! 
Enjoy your visit and do not hesitate to call if you need any more assistance.