U: I want a train that goes to stansted airport and leaves from cambridge.

S: There are many that leave cambridge and go to stansted airport; what day would you like to leave and what time?

U: I need the train to leave after 09:15 on Saturday.

S: I have train TR2755 that will leave at 09:40 and put you at the airport by 10:08. Would that work for you? If not, I have later trains.

U: That train works well.

S: Would you like me to book this train for you?

U: Yes please. Get me 8 tickets for my party as well as a reference number.

S: Your reference number is UKOTND0A. Would you like anything else today?

U: I also need a hotel that has free parking. I don't need internet or anything like that.

S: I have 29 places to stay with free parking. Is there a price range you'd like to stay in?

U: Are any of the 29 places, guest houses?  I would actually prefer a hotel rather  than a guest house.

S: There are 8 hotels that match that description. Did you have a price range or area in mind?

U: I do not have a price preference.

S: which side of town are you ok with?

U: I just need a hotel with free parking in any part of town. Perhaps you can suggest one.

S: i would recommend the lovell lodge. it's moderately priced with 2 stars and has free parking and wifi. would you like to reserve a room?

U: Are the rooms clean?
S: Guest reviews of cleanliness at Lovell Lodge are pretty mixed. That's too bad. Should I find another option for you?