Task-oriented dialogue about: train

I would like to find a train that is leaving Cambridge on Monday.
I can assist you. What is your destination and departure time?
I'll be leaving from london kings cross and need to leave after 17:15.
I have a train leaving Cambridge for London Kings Cross Monday at 19:00, would you like me to book it?
I need the arrival time and price
The ticket will coat 23.60 pounds and it will arrive at 19:51.
Thanks, that's all. Good bye.
Alright. Goodbye now. Thank you!