hi , i am looking to book a ticket for a train departing on sunday from cambridge please ?
user
what is your destination ?
assistant
i want to arrive at london kings cross .
user
what time would you like to leave by ? it is a 51 minute trip for 18.88 pounds .
assistant
i do not have a departure time but i want to arrive by 21:30 .
user
there is a train leaving cambridge on sunday at 19:00 . it arrives at london kings cross at 19:51 . may i book that for you ?
assistant
no , i just needed the information , thanks . have you heard of the meze bar restaurant ?