U: I would like to stay in a guesthouse that has free parking while I'm in Cambridge. Thanks.

S: I have 21 options for you. What area would you like to stay in?

U: It can be anywhere as long as it has a 4 star rating.

S: That narrows it down to 16. Do you care about the price?

U: I would like a moderate price range.

S: There are nine guesthouses what part of town would you like

U: I'm not concerned with the area - can you recommend a nice place that fits with what I'm looking for?

S: I think you would like the acorn guesthouse.  Would you like me to book a room?

U: Yes I would like you to book it for me

S: What day would you like to stay on? And how many days? How many people?

U: Is the water pressure nice and strong?
S: Unfortunately, the reviewers thought that the water pressure was too low at the guest house. Is there any other information that you need to know?