U: I would like to book a train leaving Cambridge that goes to London Liverpool Street please.

S: There is a train which leaves every two hours between 5:59 and 13:59 that costs 16.60 pounds. The duration of the trip is 88 minutes.

U: I need to travel on Friday sometime after 13:45. Can you tell me whats available?

S: I have train TR4187 that leaves at 13:59 and arrives by 15:27 in london liverpool street. Would you like me to book that for you?

U: Great that's all the information I needed on the train.

S: Excellent! Can I help you with anything else today?

U: I also need to find a restaurant. Preferably one that serves Jamaican food. Can you find that for me?

S: Unfortunately there aren't any restaurants serving Jamaican food in the area, would you like to try another type of food?

U: What about one in the centre?

S: My apologies, there are none that serve Jamaican. Would you like to look for a different type of cuisine?

U: How about one that serves British food in the same area?

S: I have found several, how about this one? The Oak Bistro, price rang is moderate, phone is 01223323361, post code cb21eg, 6 Lensfield Road.

U: Do they offer good portion sizes?
S: According to the reviews that I have on hand for this location, the portion sizes are really generous, great, and involve a ton of food.