Task-oriented dialogue about: train

I am looking for a train. The train should arrive by 14:45 and should leave on Saturday.
And what are your departure and arrival stations?
I would like to leave Cambridge and go to London Liver Pool.
There are 5 trains running on saturday that will meet your needs. Would you care to book tickets for one?
I actually just need to know the price of a ticket please
The price of one ticket is 13.28 pounds. May I assist further in any way?
No thanks, that was all I was hoping to find out! Have a good day!
Okay, great, I hope you have a nice day too!