Hi, I'm looking to book a train to Cambridge, that leaves around 16:00. 
Sure. Where would you like to depart from?
Kings Lynn after 16:00 on Saturday, please.
TR4235 departs kings lynn at 16:11 and arrives in cambridge at 16:58. Would you like to book passage on that train?
What is the price on that trip?
The price of TR4235, departing Kings Lynn at 16:11 on Saturday, is 7.84 pounds. Shall I book passage on that train?
No. Not right now. thank you very much for your help today. 
Ok, is there anything else you need assistance with?
No that is all for the time being. Thank you.
You're welcome.  Enjoy your trip.  Are you quite sure there's nothing else I can help with?
I actually do need the price for that train please.
The price is 7.84 pounds.
Thanks.  That's all I wanted to know.
You're welcome. Can I help you with anything else today?
No.  That's all I need.  Thanks!
Let us know if you need anything else.