hi . i am looking for a train that goes to cambridge on saturday . can you help me ?
user
there are 5 trains departing from london kings cross station to cambridge on saturday . each will take 51 minutes . is there a specific time you would prefer to depart ?
assistant
i would like to leave after 12:00 .
user
there is a train leaving london kings cross for cambridge at 13:17 on saturday . would you like me to book it ?
assistant
yes , i will need to be on that train .
user
okay , how many tickets would you like ?
assistant
i need 8 tickets .
user
your booking was successful . the total fee is 151.04 gbp and the booking number is x1nec9s5 . thank you again .
assistant
actually , i need to depart from kings lynn , not kings cross . can you change that please ?
user
tr7178 departs from kings lynn to cambridge saturday at 13:11 , arriving cambridge at 13:58 , would you like to book this 1 ?
assistant
yes , please book 8 tickets for that train . may i please have the reference number ?