U: I need a train to Broxbourne, that arrives by 20:30.

S: Certainly. Can I assume you're leaving from Cambridge?

U: Yes, that is correct.

S: There is a train leaving at 5:01, would you like a seat?

U: Is that leaving on Sunday?

S: I have the TR8991 leaving at 19:01 and arriving by 20:01. Would you like me to book that for you?

U: Not yet but I also need a restaurant that serve mediterranean food and should be in the centre of town.

S: I have a few restaurants that fit your criteria. The Gardenia, La Mimosa, and Shiraz Restaurant. Which one are you interested in hearing about?

U: Which ones have good selections of non-alcoholic drinks?
S: La Mimosa and Shiraz both have many non-alcoholic drinks available. Would you like to book a table at either of those?