i need a train departing from cambridge .
user
ok , where will you be going ?
assistant
i will be going to london liverpool street on sunday .
user
and what time would you like to leave after or arrive by on saturday ?
assistant
i am leaving on sunday , not saturday . can you make sure that s correct ? and i want to arrive by 21:00
user
i am so sorry about the mix up in days . i have tr0189 arriving sunday at london liverpool street at 17:27 . would this be acceptable ?
assistant
thanks so much , thats all i needed