i am looking for a chinese restaurant .
user
okay . any other criteria ?
assistant
i actually do not want a restaurant . i need a train to birmingham new street on sunday . can you help me ?
user
is there a certain time you need to leave after or arrive by ?
assistant
i need to arrive by 15:45 .
user
tr1931 will arrive by 11:44
assistant
what is the reference number ?
user
i'll be able to give you a reference number once we have booked . did you want me to book this train for you ?
assistant
yes . please book me 2 tickets .