Hi. Can you help me find a train?
what day would you like to leave?
I want to leave on Sunday, please.
Where will you be departing from?
I'll be departing from cambridge and want to arrive by 19:30 on sunday. Could I also get the train ID as well?
There are 146 departures from Cambridge on Sunday that match your arrive by time. Where is your destination?
kings lynn and I also looking for a restaurant in the south and expensive price range
Sure, I can help you with that.  First, let's find the train.  How early would you like to leave? 
arriving by 19:30 on sunday. I need the train's ID please. Leaving cambridge going to kings lynn
TR3212 leaves Cambridge at 05:11 and arrives in Kings Lynn at 05:58. Will this one work for you?
I'd like something a little later in the day, please. 
TR2045 leaves at 18:11 and arrives at 18:38. Would that be acceptable?
that sound just fine
Would you like me to book tickets for you? 
please do. i would also like help finding an expensive restaurant.
How many seats do you need on that train?
I do not need train reservations. I need help finding a restaurant. 
There are several fine restaurants.  What area and what type of food would you enjoy?
South area, and food type doesn't matter. I need it for 3 people at 15:45 on the same day, if that time doesn't work 14:45 and i'd like a reference number.
You are booked at frankie and bennys for 3 at 1545. your booking number is T01E84XG
Thank you for your help.  That is all I need. 
Okay. Glad I could be of help.