U: I need a train departing from Cambridge, leaving after 21:30.

S: What time were you looking to arrive and what is your destination?

U: I need to go to Peterborough on Tuesday please

S: The TR7663 departs at 21:34 and arrives in Peterborough at 22:24. Shall I book this for you?

U: Yes, for 7 people please.  I need the reference number.

S: Booking was successful, the total fee is 115.5 GBP payable at the station. Reference number is : NBX6ZT2O.

U: I'm also looking for a restaurant in the south on the expensive side.

S: I have 5 results for expensive restaurants in the south. Are you in the mood for Chinese, Indian, Italian or Mexican food?

U: We are looking for indian food.

S: The Taj Tandoori is an expensive restaurant in the south.  It is located at 64 Cherry Hinton Road.  Would you like me to book it?

U: Is this place highly rated for large portions?
S: There are mixed reviews on the portion sizes so it depends on what you order. Most customers thought the portion sizes were too small and should've been bigger. Other customers thought the portions were plentiful. Would you like to know more about them?