I'd be really happy if you could help me locate a place to stay in Cambridge tonight.
Absolutely, are you looking for anything specific?
I want an expensive guesthouse with free wifi
Which part of town are you looking to stay in?
I dont have any preference when it comes to where it is. As long as it is 4 stars
I'm sorry, there aren't any guesthouses that fit your requirements.
Then how about one in the cheap price range?
Cheap we can do! I recommend the Autumn House in the east. Would you like to book a room there?
Yes, I would.  I need 3 nights, 7 people, starting Wednedady.  I need the reference number.  I also need a train to Cambridge after 14:45.
I was able to book the hotel, reference number is T8ZCCFKU.
Great! Now could you help me book a train from Stevenage going to Cambridge on Wednesday?
TR9675 leaves Stevenage at 15:54 and arrives in Cambridge at 16:43. Will this work for you?
Yes, no need to book, I just need the travel time.  
The total travel time is 49 minutes for that route. 
Thanks, that's everything. This is going to be a great trip!
You're welcome, and I hope you have a good time.