i want to go to a park
Sure, there are a few.  What part of town do you prefer?
anywhere is fine. May I get a postcode ?
There are 5 different parks. Postcodes are CB21JF, CB18DW, CB46AZ, CB22AD, and CB223AE.
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. 
I have three 4 star hotels. what are or price range do you prefer?
The price doesn't matter.  I do want it to be in the north area of town though.
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?
Are there any 4 star guesthouses in the north available?
No, I'm afraid there aren't.
Could you look for something that isn't a guesthouse then? 
There are no hotels that meet your requirements.
I guess I will take the guest house.
Okay, Do I need to book that for you?
Yes, please, for 6 people, for 4 nights, starting Wednesday.
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?
But I said I would take the guesthouse. 
I'm so sorry about that.  You are booked at the Acorn Guest Lodge.  Reference number is : R68P0A12.
i aslo want to book a taxi to commute between the two places.
I'm sorry, but I don't think we determined which park you wanted to visit. Where will you be departing from?
the hotel by 14:45.
I'm sorry but there are no parks in the area of your hotel.