I am going to cambridge and need a place to stay.
I'd be happy to help you find something. Is there an area you prefer? And do you want a hotel or guesthouse? 
I definitely want both a guesthouse and the centre of town.
I would recommend el shaddai. Would you like a reservation?
Is it in the moderate price range? If so, yes.
It is not in the moderate price range, would you like to try another area or a different price range perhaps?
I would like to try another price range, only in the moderate range. I would like to stay in the city centre. 
I'm sorry there are no moderate guesthouses in the centre, maybe another area perhaps?
Are there any cheap guesthouses in the centre of town?
Yes, I've located Alexander Bed and Breakfast that is a 4 star and El Shaddai that is a 0 star. Do you have a preference? 
no preference I also need a reference number.
What day would you like to stay and how many people will be staying?
There will be 2 people and we will arrive on Monday.
And for how many days?
I'm sorry, 5 nights please.
Good News! I got the Alexander Bed and Breakfast in 56 saint barnabas road cb12de, phone number 01223525725. The reference # is 3MWI64S9.
Great. I also need a train leaving on Saturday.
Please give me your departure site and your destination station.
The train should leave after 10:00 and should go to stevenage, leaving from cambridge.
There are 7 trains that fit your criteria. The first one after 10 is the TR8377, leaving Cambridge 11:21, arriving Stevenage 12:10. Would you like to book a seat?
Yes, that will work!  I need the reference number please.
Booking was successful, the total fee is 10.24 GBP payable at the station .
Reference number is : Y5AV9STN.
Thank you so much! That's all I needed. Have a great day!
Have a nice day then, and goodbye.