U: I need to book a train leaving from London Kings cross.

S: What day were you wanting to travel on?

U: I need to leave after 11:30 on tuesday. I'm traveling to cambridge.

S: I have 6 entires. TR3456 leaves at 13:17. Does that work for you?

U: Yes can I get the price on that?

S: Yes, it's 23.60 pounds per ticket.

U: Can you find me a restaurant that serves afghan food and is located in the east?

S: I'm sorry we don't have any Afghan restaurants in the east area. Would you like to try a different type of food or a different area?

U: How about Italian food?

S: The only Italian place in the east is Pizza Hut Fen Ditton. Would you like more information?

U: Could you give me any more information about the atmosphere?
S: It is said to be a good atmosphere.  It has also been called very upbeat and sports-bar like by previous customers who have dined there.