Good day, I need help getting a train from London Liverpool street going all the way to Cambridge, can you help me?
Sure thing there are 70 trains making that trip, what day and time would you like to go?
I would like to travel on Wednesday and arrive by 10:15. Can you help?
There are 3 trains available. Do you have a preferred departure time?
No, as long as it arrives by 10:15.
TR8813 departs london liverpool street at 7:39 and arrives in cambridge at 9:07. I can book tickets for you, if you like.
That will be great. I am also looking for a place to stay in the south part of town. Do you have any recommendations? 
Certainly, we have 3 guesthouse aylesbray lodge guest house, bridge guest house, rosa's bed and breakfast or the lensfield hotel. Which would you like?
I need something in the cheap price range. 
Rosa's Bed and Breakfast fits that, would you like to book a room there?
Does the hotel offer free wifi?
Yes, Rosa's does offer free wifi.
Great, I think that will work. I need a room for myself for five days, starting Wed.
Sadly I was unable to book you for that time period. Is there another day you'd like to check in, or possibly you could stay for a shorter time period?
Would you be able to book the stay for four nights instead? Can i also get the reference number?
Booking was successful for 4 nights at rosa's bed and breakfast . Your reference number is : 1G56HJK3.  Can I help you with anything else?
That is all I need today. Thank you. 
You're welcome. Good-bye.