U: I want to take a train to Cambridge on Friday, what's available?

S: I found 202 trains. What is your departure station?

U: I would like the departure station to be broxbourne.

S: I have a train leaving that station at 09:32 and arriving at 10:32, if that's acceptable?

U: No, I need something that gets there by 9:45.

S: I have train TR3005 that arrives at 09:32,would that be good for you?

U: Yes, I need the reference number.   I am also looking for a place to eat in the south area, preferable italian.

S: There are two restaurants that are Italian, Pizza Hut Cherry Hinton, and Franky and Bennys.  The reference number for your train is  0EG8EWWR.

U: Pick one of those. I need it for the same amount of people at 17:15 on the same day.

S: I'm sorry, both of those restaurants are fully booked for the time requested. May I check another restaurant for you?

U: Okay. Can you find another Italian restaurant?

S: There are many italian restaurants not in the south of town, do you have another area preference?

U: Not really. Please make a recommendation.

S: There is a Pizza Express that is in the Centre area. It is in the moderate category. Would you like me to try to book that?

U: Do they have a variety of non-alcoholic drinks?
S: The Pizza Express has mixed reviews. One person said they have many non-alcoholic drinks to choose from, and one said the opposite.