U: I need to get to cambridge after 19:30

S: There are more than 300 trains that arrive in cambridge after 19:30.  What day were you looking to travel and from where?

U: I'd be leaving from London Liverpool Street on Saturday.

S: Yes I have a train leaving from Liverpool Street that will arrive in Cambridge at 19:39. Would you like me to book that for you?

U: How long is the travel time, and what is the price for that train please?

S: Sure, the travel time is 88 minutes, and the price is 13.28 pounds. Would you like to book it, if so how many riders will there be?

U: No that's OK, I'll book it later if I need to. Can you tell me anything about a lodging place named "A and B" something?

S: Sure. It's called a and b guesthouse, found on 124 tension road and is in the moderate price range.

U: Do they thoroughly clean the rooms between guests at the a and b?
S: Reviewers did not feel as if the rooms were as clean as they should have been. Do you have any other questions?