U: I would like to book a train. I need to arrive by 17:15 and would like to leave on Wednesday.

S: I can help you with that.  What are your departing and arrival stations?

U: I am departing from the London Liverpool Street station, and want arrive at the Cambridge Station.

S: I would recommend TR7978 which leaves London Liverpool Street at 15:39 and arrives in Cambridge on Wednesday at 17:07.

U: Sounds perfect. Could you make me a booking for 4 people?

S: I have made those reservations. Your reference number is FN3LCW4X and the total fee is 66.4 GBP payable at the station.

U: I'm  looking for a restaurant. The restaurant should serve british food and should be in the expensive price range

S: I'm showing 6 restaurants that meet your criteria.  Does it matter which part of town its in?

U: I would like for it to be in the west.

S: I have 2 in the west, both expensive and serving British food. Would you be interested in either of those?

U: Can you tell me which two they are?

S: Sure. I have two great choices for you:  Graffiti and Travellers Rest. Do you have a preference?

U: recommend any and book it for me

S: I recommend the Graffiti restaurant. How many people are in your party, and what time would you like me to book for you?

U: How are the portion sizes at the Graffiti restaurant?
S: The portion sizes at the Graffiti Restaurant are generously  big and packed with flavor. Should I book a table?