Task-oriented dialogue about: hotel

I'm looking for a cheap hotel.
alexander bed and breakfast is a guesthouse east of Cambridge center that is cheap, would you like more information?
Does it have a star of 4. I don't care if it has free parking.
Alexander bed and breakfast does have a 4 star rating, would you like help to book a room?
Actually, you mentioned its in the east. I really prefer something in the centre of town thats cheap and 4-star rated. It can be a guesthouse or hotel.
The Alexander Bed and Breakfast is a cheap 4 star guesthouse in the centre of town. Would you like me to book it for you?
Yes. I'm travelling with my family, so I need a room for 7 people for 4 nights, arriving Thursday.
Sorry, that booking was unavailable. Perhaps you'd like a different day or a shorter stay?
Can you see if they have just 2 nights available?
I'm sorry, that time is not available. Can we try a short length of stay or different day?
Are you sure the Alexander is in the centre? You said earlier that it's in the east.
Yes, it's in the centre.
Please double check and make sure the booking is good.
Yes, I was able to book that. The reference number is U0JT0YZ8 . DO you need anything else?
That is all for today. Thank you.
No problem. I'm glad I could help.