I'm looking for a train leaving cambridge on sunday.
I can help with that. What is the destination and what time would you like to leave?
I would like to go to stevenage by 14:00. 
You can take train TR8464 to arrive there in time.  Would you like me to book it for you?
Yes please book it for 7 people and provide the reference number.
Here is the booking information:Booking was successful, the total fee is 71.68 GBP payable at the station .
Reference number is : FCZJMTAI.
I am also looking for a place to stay. 
I'll be glad to help you with that. What area would you like to stay in?
Somewhere in the north, with 4 stars, free parking, and expensive.
i don't have anything that fits those criteria, would you like me to look for something else?
Can you try those same things but in the moderate price range?
That bring sup six results, I recommend the home from home guesthouse, would you like more info or a booking?
Yes, could I book one for 4 nights starting from Wednesday? 
Sure! For how many people?
2 people and 1 dog 
Your room has been booked. Your reference number HPLM0SM6.
Great, that's all I need, thanks so much for your help! Have a great day!
Not a problem. You have a great day, as well!