i need a train that departs from cambridge and arrives at london liverpool street . can you help me ?
user
i would be happy to . do you have a specific date and time for your departure ?
assistant
i want to leave on saturday and should arrive by 18:00 , i have a doctors appointment to see to .
user
the tr4466 arrives in london liverpool street at 15:27 , would that be acceptable ?
assistant
yes what is the price , departure time , and travel time ?
user
it is 13.28 pounds , will arrive 15:27 , and the travel time will be 88 minutes . can i help you with anything else ?
assistant
yes , i'll also need a place to stay in the south and would prefer a guesthouse .
user
ok i have a few options . is there a price range you would like to stay at ?
assistant
no specific price range , but i do need free parking .
user
rosa s bed and breakfast is a great 1 in that area and cheap . it include -s free parking and wifi . would you like me to book you a room ?
assistant
yes , please . i would like to book for 2 nights and 2 people starting saturday .
user
unfortunately there is no space for your request . would you like to check another hotel or change the length of stay ?
assistant
how about for just 2 nights 4 people at rosa s bed and breakfast ?
user
are you trying to shorten your stay ? and , may i confirm the stay is for 2 people ?
assistant
i would like to try for 2 nights since there is no space and i want it for 4 people please .
user
im sorry i was unable to book that . is there another hotel you would like to try ?
assistant
let s try a different guesthouse in the south , then .