U: Can you help me find a train going to cambridge and arriving by 15:30?

S: There are no trains arriving at cambridge by 15:30. Is there another day or time you would prefer?

U: The train should depart from norwich and should leave on monday

S: Train TR3087 from Norwich to Cambridge arrives on Monday at 14:35. There are also eight earlier routes if you prefer. Would you like me to book any tickets?

U: how  much does it cost?

S: that will cost you 17.60 pounds.

U: How about a hotel room?

S: Sure, what type of hotel are you looking for today?

U: I'm looking for a moderate priced place to stay with a 3 star rating.

S: I don't have any hotels in that area meeting those criteria. Could we change some of the criteria?

U: Yes try a different area.

S: There are some guesthouses available.  Would that work?

U: Yes, that would be fine.

S: How about the alpha-milton guest house in the north?

U: Do the rooms have comfortable beds?
S: Some guests at the alpha-milton guest house said the beds were very comfortable, while others said that they could have been better, and were hard.