Task-oriented dialogue about: train

I need a train that leaves on tuesday and should depart from cambridge.
I'm finding many trains departing from Cambridge on Tuesday. What is your destination?
I am going to Peterborough and want to arrive by 13:30.
I have a train that departs Cambridge on Tuesday at 12:34 and will get you to Peterborough at 13:24 exactly. Would you like me to book that seat for you?
Yes, please! I need 6 seats.
Booking was successful, the total fee is 99 GBP payable at the station . Reference number is : NH7GXPVA .
Thank you so much, that's all I need today.
Okay great. I'm glad I was able to help you.