Can you help me book a flight from SF to LA?
On what day do you want the plane to arrive?
Friday the 30th
Unfortunately there are no flights that match your search. Would you like to change any of your criteria?
sure, any day after today is fine
Right, I found a First flight with United for 432 credits
 that takes 5 hours to get to Los Angeles.
that sounds good. can you book it for me?
May I have your name, please?
Ben
The flight is available. Should I reserve it for you?
yes please
I'm sorry, but your reservation request was unsuccessful.
That's okay, 5 hours from SF to LA sounds extreme. Can you find a shorter one?
Right, I found an Economy flight with United for 419 credits
 that takes 4 hours to get to Los Angeles.
That's a little better. Book that one please?
The flight is available. Should I reserve it for you?
yes please
Right, your flight is now reserved!
Thanks so much. thats all I need!
Thank you and goodbye.