U: Are there any trains leaving after 17:15 that go to the Stansted Airport?

S: I have a train leaving Cambridge at 17:40 and arriving at the airport at 18:08. Can I book that for you?

U: Yes, as long as its leaving Cambridge on friday....thank you

S: How many tickets would you like?

U: 5 tickets. Can you please also provide the reference number?

S: Booking was successful, the total fee is 50.5 GBP payable at the station .
Reference number is : 3R5W0FNB.  Is there anything else I can help with today?

U: I would like to find a German restaurant in the center of town.

S: I'm sorry, there are no results for a German restaurant in the town centre area.  Would you like me to look in other areas, or try for another cuisine?

U: What options are there for moderately priced restaurants at the centre?

S: There are 21 various restaurants in town centre. Possibilities include british food, asian oriental, italian, turkish, international. Do any of those sound good to you?

U: Is the asian oriental food Chinese food or from another country?

S: I'm not sure I understand your request. Could you be a little more specific?

U: I would like to book a Chinese restaurant is that clear?

S: Yes, I understand you now. There are three restaurants with Chinese cuisine to choose from: the Jinling Noodle Bar, the Lan Hong House, and the Shanghai Family Restaurant.

U: Are all 3 of those restaurants moderately priced and in the centre of town?

S: Yes , all of them are. Which one could you like me to book for you?

U: i want to know it it has various non-alcoholic drink options?
S: Jingling Noodle Bar, Shanghai Family Restaurant, and Lan Hang House all offer non alcoholic drinks which customers were satisfied with.