I need a train to cambridge 
Where will you be leaving from?
I'm leaving from Stevenage and I'll need to leave sometime after 21:15 if possible. 
What is your day of travel and your preferred arrival time?
I'm working at leave on Wednesday after 21:15
Train TR3190 will depart at 21:54, would you like me to book that for you?
That would be great. I am also looking for a hotel. I would like to stay in the east side of town, and I do not need parking.
The only hotel in the area is a guesthouse called, a and b guest house. They are 4 stars.
No, I need a hotel, not a guesthouse.
I am sorry but there are no hotels in that area.  a and b guest house has 4 stars.  Would you like to give it a try?
The guesthouse will be ok, as long as it's rating is a star of 4.
Yes, indeed, the A and B guesthouse does have a 4 star rating. Would you like a booking?
Can I book 4 nights for 6 people on that same Wednesday?
You're all set, your reference number for the booking is UFVH6K6Y.
Thanks, that's all I need. Have a nice day.
You're welcome. Have a great day too!