Hello, we're planning on a trip to Cambridge and would like lodging info.  Can you tell us if there is a hotel in the economical range near the centre?
Unfortunately, there are no economical hotels in the centre of Cambridge. Would you like to look in a different area?
Really? Not even a guest house?
Yes, there are no accommodations available that fit that criteria. Would you like to choose something else?
I'm looking for a cheap hotel in the centre.
There are two cheap guesthouses located in the centre.  My recommendation would be Alexander Bed and Breakfast. 
Sounds great! Can you book it for 5 people and 4 nights starting from monday?
Your booking was successful at the Alexander bed and breakfast. The reference number is F9VVA2GL.
Thank, you goodbye 
Welcome ,  have a lovely day too.