I need a place to stay with 4 stars. 
What area are you looking to stay in?
I'm looking to stay in the north please. 
We have eight 4 star guesthouses on the north side. Do you have a specific price range or do you need certain amenities?
any can do as long it has a moderate price range
Okay I could recommend the Acorn Guest House that is moderately priced and rated 4 stars. Would you like a booking?
Sounds good.  I need it for 3 nights starting Friday.  There are 6 of us.
I have successfully booked you at the acorn guest house for 3 nights starting on Friday.  Your reference number is Z6DIM0YM.  Is there anything else I can help with?
I'm looking for a train going to Cambridge on Friday.  
Where will you be departing from?  I have a number of trains to choose from.  What time would you like to leave?
I will be departing from Norwich and should arrive by 16:30. 
TR4828 departs at 14:16 and arrives by 15:35. Would you like a ticket?
how much will that train cost me?
It costs 17.60 pounds per ticket. Would you like to book this? 
No, thank you. I'll call back when I'm ready to book. Thank you so much for your help.
Thank you for contacting the Cambridge TownInfo centre. Goodbye