Hi there, I am looking for a train going to Cambridge, and departing from London liverpool street. Can you book me one? 
Absolutely.  Can you please tell me what day you would like the booking to be made for?
I'll be traveling on Saturday, please. Oh and I don't want to leave too early, let's say something after 17:45.
The first train after 17:45 from London Liverpool Street to Cambridge leaves at 19:39 and arrives at 21:07. Would that be to your liking?
That would work, could you tell me the travel time for that as well?
Absolutely. The travel time is 88 minutes for that route. Would you like me to book a ticket for you? 
No, I don't need it booked right now. I would really like to find a college to visit in town.
I have many colleges but I could recommend clare hall. It is on the west side. Would you like more information on one?
Yes.  Could you tell me what the entrance fee is?
The entrance fee is 2.50 pounds.  Is there anything else I can help you with?
Thank you for that information, you've been very helpful. I will call back when I'm ready to book the train.  Goodbye.
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