I am looking for a place to stay and it doesn't need free parking , but I would like it to be cheap.
There are lots of accommodations in the cheaper price range, but they do all offer free parking. Also, is there a certain part of town you'd like to be in?
Yes, the east part of town.
How about autumn house?
As long as it has free parking, we are good to go!
Great, would you like for me to set up a booking?
Yes and can I get a postcode?
The postal code is cb58rs. What day would you like to book the room for and the legnth of stay?
I am not sure on the day yet, However am looking for a train to goes to Broxbourne. 
Sure, there are many leaving from Cambridge.  What day and time are you looking for?
I would like to leave on wednesday and arrive by 20:00. 
TR1148 leaves Cambridge at 18:01 and arrives in broxbourne 19:01. It is the last train on Wednesday. Do you want me to book it?
Yes, for six people, please. And I'd like the reference number.
Booking was successful, the total fee is 107.4 GBP payable at the station . Reference number is : 8YRZZYEZ.
Thank you, that is everything that I need.
Thank you for contacting us, have a nice day.