U: I'd like information about your trains, particularly ones leaving on Sunday.

S: There have plenty of trains that leave on Sunday.  Where are you departing from or traveling to?

U: I'm traveling from norwich going to cambridge.  I would like the train that leaves after 15:00.

S: TR8733 leaves at 15:16 and arrives at 16:35, would you like me to book you?

U: Sure. Just one ticket, please.

S: I have booked that train for you! The reference number is 56BJFYC3. Do you need any further help?

U: Yes I am looking for a restaurant serving Indian food in the city center.

S: There are 5 restaurants listed. Any preference for price range?

U: Moderate please. If that isn't available though I can do expensive.

S: All 5 of those restaurants are expensive. I would recommend the curry king. Could I book you a table?

U: Can you tell me whether the non-alcohol drink menu at Curry King is extensive?
S: People say that there are a lot of non-alcoholic drink options at the Curry King. Could I book you a table?