U: I need to find a train into Cambridge that will arrive by 09:15.

S: I can help you with that. Where are you traveling from?

U: I will be leaving the Stansted Airport on Thursday.

S: Perfect, I have train TR1472 that meets your criteria, would you like me to book a ticket for you?

U: Book it for 3 people.

S: Sure. Your train is booked. The fee will be 30.29 GBP and your reference number is 7FGDRE1Q.

U: I need to find a place to stay as well. Can you help?

S: I need to know what you're looking for first.

U: I am looking to find a guesthouse in the centre of town.

S: May I recommend Alexander bed and breakfast? It is a cheap guesthouse with a 4 star rating in the centre of town.

U: Are there any 4 star guesthouses in the centre that are expensive?

S: No there are not.  Would you like me to book the Alexander bed and breakfast for you?

U: how about one that is in the type of hotel?

S: I am sorry but there are no 4 star hotels either.  Would you like to try another star rating or area?

U: Are there any guesthouses in another area close by?

S: I'm afraid not. Would you like to try a different price range or star rating?

U: Are there any 4 star guesthouses in Cambridge?

S: Based on the criteria, there are no 4 star guesthouses that are expensive anywhere in Cambridge.

U: I do not want to stay in a guesthouse. I want to stay in a hotel please.

S: I have found two 4 star hotels that are in the expensive price range. One is located in the west, and the other Centre. Would you like more information?

U: I'm sorry.  The guesthouse would be my preference. It should be 4 star rated and in the town center. What's available that meets those specifications?

S: I'm sorry, there are not guesthouses that meet your criteria.  There is 1 guesthouse that is 4 stars in the cheap price range in that area of town.

U: Is there a possibly a hotel instead then?

S: Okay. I have the University Arms that is in the center, rated 4 stars and is in the expensive price range. Would you like me to book that for you?

U: Does this place have comfortable beds?
S: The University Arms Hotel could offer slightly more comfortable beds, however many guests did achieve a pleasant night's sleep.