i need a train on wednesday
user
where are you departing from and where is your destination ?
assistant
i will be departing from cambridge . my destination is birmingham new street .
user
i have got lots of available trains that will get you there . do you have a preferred time you want to leave or arrive ?
assistant
i want to leave after 08:15 , arrival is not that important .
user
i have 1 leaving cambridge at 9:01 and arriving in birmingham at 11:44 . would you like to book this 1 ?
assistant
yes . would you please provide me with the reference number ?
user
i have booked you and your reference number is 93nzyrzq .
assistant
thank you so much .