I need to take a train from Cambridge to the stansted airport, which train would be the best one?
I have several trains traveling to stansted airport, which day would you like to leave?
I need to leave on Tuesday after 16:00, please.
TR0471 leaving Cambridge on Tuesday at 16:40 and arriving at Stansted Airport by 17:08. Would this one work for you?
Yes, that sounds good. Thank you.
Is there anything else I can help you with?
Yes I'm looking for a place to stay in the south part of town with a 3 star rating.
Okay I have two different options. There is a guesthouse and a hotel. Both have free parking and wifi. Any preference as to which one?
I would take the guesthouse.
Okay, happy to help! would you like more information or a reservation?
The hotel please. I need to book it for 3 people 4 nights starting friday.
You are booked into the lensfield hotel. The reference number is O46I4NOR. My I help you with something else?
no. that is all i need. thanks. bye. 
Great! Have a nice evening.