I need a train leaving after 18:15 departing from birmingham new street
OK, and what day are you traveling?
Friday. I'll be heading to Cambridge.
Train TR8903 departs for Cambridge on Friday at 18:40.  Will this work for you?
Yes, that works - could you book 3 tickets please. Also, what is the reference number.
I have booked the 3 tickets for you. The reference number is WGU9CZ1C.
Great. I am also looking for a place to stay. It does not need to have free parking and doesn't need to include internet. 
I believe the Alpha-Milton Guest House might meet your needs. It's moderately priced in the north, 3 stars, with no internet or parking. Would you like more information?
Is it in the centre? 
No I'm sorry alpha-milton guest house is in the north. Do you need something in the centre?
I suppose the north will work for me. 
Alright, would you like me to book you a room at the Alpha-Milton Guest House?
Yes please. Make sure to send me the postcode for the hotel.
The postcode for the Alpha Milton Guest House is cb41xa. How many guests will be staying in your party and how many days? When will your stay begin?
I don't need to book right now. I just needed to know the postcode and the hotel type please. Can you confirm those?
Certainly! It is a guesthouse and the postcode is cb41xa. Is there anything else I can help you with today?
I'm sorry, I decided that I do need a hotel in the centre.
I have 3 results for hotels in the centre area. Would you prefer moderate or expensive priced?
I don't car, but I'm not bringing a car or computer so I don't need parking or internet. Which ones don't have those?
I recommend the Gonville Hotel. It is an expensive 3-star hotel in the center. I can book a room there, if you like.
That's not necessary. Thanks for the help!
You are welcome.  Is there anything else I may assist you with today?
Nope, I think I'm all set.
Thank you for using this system!