Hi I would like to find a place to stay that has a guesthouse and free parking.
Which day would you like the reservation to start?
Can you tell me the hotels that meet that criteria first? I need a 4-star guesthouse with parking.
Acorn Guest House has all the criteria you need. Would you like me to book that?
Book it for 4 people staying for 2 nights and give me the reference number. 
I would be happy to do that. I just need to know what day you would like your reservation to start.
monday, please
Your booking was successful for 4 people at the Acorn Guest House, staying 2 nights starting Monday. Your reference number is : DB9SPLT7. Is there anything else I can do today?
Also on Monday I am looking for a train destined for Cambridge. I need to depart at 21:00 from the Stevenage.
It looks like there are only trains on Friday and Saturday from Stevenage. Would another day do?
Before we continue, I need the reference number for my hotel booking.
Reference number is : DB9SPLT7.
So is there any train on Monday?
There are two. One leaving at 21:54 and the other leaving at 23:54.
Are there any trains from stevenage to cambridge on Monday leaving at 21:00? That is what I'd prefer. 
The closest train would be TR1699 departing Stevenage at 21:54 arriving Cambridge 22:43. The ticket would be 12.80 GBP. Shall I book this for you?
I suppose, please give me a price and train ID. 
The train id is TR1699 and the price is 12.80 pounds. How many tickets would you like to purchase?
One ticket, please.
Is there anything else I can do for you?
No that will be all for today. Thank You!
1 ticket for train ID TR1699 from stevenage to cambridge at 21:54 has been booked. Your reference number is W6J8TUAC. Have a nice day.