Domains: taxi, attraction, hotel

user: i want to go to a park

assistant: Sure, there are a few. What part of town do you prefer?

user: anywhere is fine. May I get a postcode ?

assistant: There are 5 different parks. Postcodes are CB21JF, CB18DW, CB46AZ, CB22AD, and CB223AE.

user: I'm also looking for a hotel to stay in. I need to make sure it's a hotel and not a guesthouse, with a star of 4.

assistant: I have three 4 star hotels. what are or price range do you prefer?

user: The price doesn't matter. I do want it to be in the north area of town though.

assistant: I'm sorry, I don't have any 4 star hotels in the north. Would another area be ok, or should I check other star rating options?

user: Are there any 4 star guesthouses in the north available?

assistant: No, I'm afraid there aren't.

user: Could you look for something that isn't a guesthouse then?

assistant: There are no hotels that meet your requirements.

user: I guess I will take the guest house.

assistant: Okay, Do I need to book that for you?

user: Yes, please, for 6 people, for 4 nights, starting Wednesday.

assistant: I'm sorry, but I'm afraid we'll need to try different criteria. Would you be willing to change what part of town you stay in, or the star rating you need?

user: But I said I would take the guesthouse.

assistant: I'm so sorry about that. You are booked at the Acorn Guest Lodge. Reference number is : R68P0A12 .

user: i aslo want to book a taxi to commute between the two places.

assistant: I'm sorry, but I don't think we determined which park you wanted to visit. Where will you be departing from?

user: the hotel by 14:45.

assistant: I'm sorry but there are no parks in the area of your hotel.