U: I am looking for a train from cambridge to london kings cross.

S: I see several options, all leaving on Friday. Is there a time you prefer to leave at?

U: I need to leave after 17:45 on tuesday

S: There are 3 trains that match your request. They leave at 19:00, 21:00, and 23:00 respectively. Would you like to buy a ticket for one of these?

U: I'll take the earliest train. I need two tickets and the reference number.

S: Booking was successful, the total fee is 47.2 GBP payable at the station. Reference number is : 0KAR945K. Anything else I can help with?

U: I'm also looking for a restaurant. The restaurant should be in the expensive price range and should be in the centre

S: I have several restaurants located in the centre, what type of food are you looking for?

U: I'm open to restaurant suggestions. What sounds interesting?

S: I have 5 restaurant, choices of food are african, asian oriental and british. Which of the  restaurant you?

U: African sounds good. Can you make a reservation for two for the last seating?

S: I sure can but in order for me to make a reservation for you at bedouin for some yummy african food, I need a precise time and day

U: Do they provide great service?
S: The Bedouin is considered to be mostly mediocre, although some servers there have a good attitude and a few people think the service was great.