I need a train to peterborough from cambridge on sunday. 
There are many trains, beginning at 05:19, do you have a time preference?
I would like to leave after 18:15 please. 
Is there a time you need to arrive by?
No, thank you. I just need the train ID and price of the ticket.
Train TR6662 leaves at 18:19 and the price is 13.20 pounds. Is there anything else I can do for you today?
No thanks that is all I need. Thanks for the assistance. 
thanks too for choosing us
Thank you and goodbye.
Glad I could help hope you have a great day.