I need to book a train from Cambridge to Stevenage.
What day would you like to depart? 
I am leaving on Tuesday, and would like to arrive by 8:30.
When would you like to depart Cambridge? I have multiple options that would have an arrival time prior to 8:30
Departure time is flexible, but mid-day would be nice.
There are 2 midday trains: TR6009 departs at 11:21 and TR0743 departs at 13:21.  Could I book one of these for you?
Yes please, the TR6009 sounds good. 
Ok. I will book the TR6009 for you. How many tickets should I book?
Just one please.
Booking was successful, the total fee is 12.8 GBP payable at the station and your reference number is 7HK6895I. Can I assist you any further?
Yes.  I would like a guesthouse with free wifi, please.
Sounds good. I will be glad to take care of that for you.
Thanks! I need a 0-star place.
I found 2 places matching that, city centre north b and b, and el shaddai. Which would you like to book?
Can you tell me if either of these have free parking?
Yes, both the city centre north b and b, and el shaddai have free parking. Do you have a preference?
I don't care.
Alright. How many people are you booking for? What night will begin your stay, and how many night will you be staying?
I don't need rooms reserved at this time. That was actually all the information I need today. Thanks for your help.
It was my pleasure to help. You have a wonderful day.