I need a train for stansted airport and I need to arrive by 19:30 please.
What day will you be traveling on? 
I will travel in Sunday. 
Okay. Where will you be leaving from please?
I want to leave from Cambridge.
ok the TR5009 arrives at 19:08.
Yes can you book that for me please?
certainly, how many tickets do you need?
I just need one ticket please.  I need the train price as well. 
There is no longer a TR5009 but have booked you for the next best. The price is 8.08 GBP
Actually, can you tell me the travel time for that?
I apologize, TR5009 is available. It is a 28 minute train ride, leaving Cambridge at 18:40, arriving at Stansted Airport by 19:08. Your reference number is 090MN9HI.
I appreciate your help. I am also interested in looking at a college while I am in Cambridge. Could you help me?
We have many to choose from, is there a certain area you'd like to be in?
No particular area, would you choose one for me?
Pembroke college will blow your mind, free adminssion located at trumpington street, postal cb21rf, phone 01223338100.  Are there any other questions today?
Thank you that is all I needed today. 
You're welcome, let me know if I can assist with anything else.