I'm planning a trip in Cambridge. Can you give me train information?
Absolutely. Let's start by figuring out where you'll be traveling from, and where your destination is. 
I am traveling from Cambridge and heading to Birmingham New Street.
What day will you be traveling?
Tuesday, I am leaving from cambridge going to birmingham new street, can I get the train ID when you get a chance please?
What time would you like to depart or arrive?
I need to leave by 17:30.
I have Tr6413 leaving at 17:01. Would you like me to book a seat for you? 
No, but can I get a postcode and the entrance fee? 
Which attraction do you need the postcode and entrance fee for?
I'm sorry my brain got jumbled there, no to booking a seat on the train. I do need to find some architecture to look at while visiting.
The centre of town boasts some magnificent old churches. Little Saint Mary's, for instance, which is free to visit.
That sounds amazing, what postcode are they in?
It is really marvelous! The postcode is cb21qy, make sure to visit the gift shop too!
Thank you! I think that is all I need today.
You're welcome! Have a great day.