I need a train out to London Liverpool Street on Saturday. 
What time do you need to leave on Saturday?
I'd like to leave sometime after 16:15, leaving from Cambridge. 
The first train after 16:15 TR8824 leaves at 17:59. Shall I book it for you?
Can you tell me how much that will cost and how long the journey is?
Yes, it will cost 13.28 pounds and take approximately 88 minutes. Would you like me to book it for you?
Not at this time. Thank you for everything!
Sure. Let me know if you need anything else.
Okay. Thank you.
You're quite welcome! Thanks for contacting the Cambridge TownInfo Centre and have a great day!