I need a to find a train departing from stansted airport going to cambridge.
Do you want the earliest train?
It needs to leave after 9:15
There are 105 trains making that trip do you have a day you need to travel?
I am looking to leave on Thursday. Can you also please give me the train ID for this trip?
TR0031 leaves at 9:24, would you like me to book it for you?
That might be cutting it a little close. Maybe one an hour later?
Okay I have a 10:24 that arrives at 10:52.
Can you give me the train ID for the 10:24?
Sure, the TR2635	train leaves at 10:24 and arrives at 10:52 with a travel time of 28 minutes. 
Thank you very much. I appreciate your help. 
Did you need anything else today, or may I close this conversation in our system?
That's all. Thank you.
Thank you, have a good day. Goodbye.