hello
Hello, how can I help?
I would like to search for a flight from Pittsburgh to Chicago 
On what day do you want the plane to arrive?
on Friday
Right, I found a First flight with American for 499 credits
 that takes 5 hours to get to Chicago.
great 
Is there anything else that I can do for you?
yes i would like to book that flight please with id 407
May I have your name, please?
Alexis
I'm sorry, but your reservation request was unsuccessful.
why was it unsuccessful?
Sorry, but the flight with id '407' is not available any more.
Is it available for Monday?
I would have to have a different booking id
i would like to check the weather in Detroit 
It will be Partly Cloudy all day on Sunday in Detroit, with temperatures of around -5 degrees celsius.
great, thank you. can't believe i can't book a flight i guess i will try another time. Thank you for your help. have a good day goodbye
Thank you and goodbye.