Domains: restaurant, taxi, hotel

user: Hello, are there any centrally located hotels in Cambridge with free parking?

assistant: There are a few hotels that meet your criteria. Would you be interested in the Alexander Bed and Breakfast? It has four stars with cheap prices.

user: The hotel should be in the expensive price range.

assistant: There are 2 hotels in the expensive price range. One has 3 stars and one has 4 stars.

user: Let's go with the 4 star option. I'd like to book it for two people and three nights starting from thursday.

assistant: Booking was unsuccessful. Would you like to book another day or a shorter day?

user: Please try to book a 1 night stay.

assistant: The booking was successful at the University Arms Hotel. Your reference number is: E7AK16IK . Would you like the phone number?

user: I also need a restaurant the restaurant should be in the expensive price range and serve north american food.

assistant: The only result in your area meeting that criteria is Gourmet Burger Kitchen in centre. Would you like me to book a table for you?

user: Yes please book the restaurant for me.

assistant: Not a problem. For what time and day will that be for?

user: I changed my mind. I will go ahead and book it myself. But, can you please provide me the address and postcode. Thanks.

assistant: Gourmet Burger Kitchen is located at Regent Street City Centre, cb21ab. Can I help with anything else today?

user: Could you book me a taxi please? I would like to leave the restuarant at 20:15 and go back to the hotel.

assistant: I have successfully booked you a taxi! You will be driven in a Black Toyota and the contact number is 07914565807. Can I help you with anything else?

user: No, that's all I need. Thank you for your help!

assistant: No problem. You have a good day now!