U: I'm looking for a train to London King Cross leaving Friday.

S: Okay, when would you like to leave or arrive by?

U: I will be coming from cambridge and would like to arrive by 13:30.

S: TR1502 leaves at 11:00 and arrives by 11:51. Does that work for you?

U: Yes. How much will the ticket cost?

S: The cost per ticket is 23.60 pounds. Would you like to book a seat on this train?

U: Not yet. I'm looking for a place to stay. I'd prefer a guesthouse with four stars. Can you find one?

S: There are 18 results, can you be more specific as to what you're looking for?

U: Are there any in the north, and in a moderate price range?

S: Yes, we have 7 hotels matching your request. Is parking a necessity?

U: Yes I'd like free parking, could you give me the postcode for one?

S: Sure.  I recommend Acorn Guest House- it is postcode cb41da.  It is in the north and moderate price as requested.  Want me to book it?

U: What is the room size for the Acorn Guest House?
S: Past customers of Acorn Guest House have been satisfied with the rooms that are large enough to fit a family. Would you like to know anything else?