I'm looking to book a train to Cambridge.  I need it to arrive by 16:00.  I also need it to department from Cambridge. Can you assist me? 
So you want a train to and from Cambridge? Can you please clarify and also give a day?
I need to go to leicester on saturday and arrive by 16:00
Train TR5677 will get you to Leicester by 11:06.  Can I reserve some tickets for you?
Yes, please.  I need five tickets.
Your booking was successful, the total fee is 151.19 GBP payable at the station . Your reference number is : 581GRL6J.  Is there anything else I can do to assist?
Can you check for Italian restaruants in the centre area? Thank you in advance.
What price range are you looking to for please? 
I'm looking for a expensive restaurant. 
You have 4 options. May I recommend Don Pasquale Pizzeria? I can try to make a reservation for you, if you like.
Yes, please book a table for 5 at 13:30 on Saturday.
You have a table for five booked at Don Pasquale Pizzeria at 13:30 on Saturday. Is there anything else I can assist you with?
Can I have the reference number?
Oh, yes, I'm sorry.  The reference number is P0X6X7AZ.
Thank you for your help, that is all I need for today.
Thank you for contacting us and have a nice day.