Hi!
Hello, how can I help?
I'll be travelling from San Francisco to Chicago, so I I'd like to know what the weather in Chicago is this Saturday.
It will be Cloudy all day on Saturday in Chicago, with temperatures of around -1 degrees celsius.
Oh good, at least there's no rain or snow! Can you find me a flight from San Francisco to Chicago?
What date would you like to depart?
I'm thinking of leaving on Thursday on the 21st.
I have found a 5 hour flight on Delta.  
I'm not a big fan of Delta, so could you find me any other airline except that one. 
Unfortunately there are no flights that match your search. Would you like to change any of your criteria?
I just found out I have to go to Los Angeles for an emergency. Can you find me flight to LA today?
On what day do you want the plane to arrive?
It's Wednesday. 
I have found an available flight on United.
Sounds good, could you book it for me too?
May I have your name, please?
Susan 
Sorry, but the flight with id '126' is not available any more.
It's an emergency, so could you check if there are any more flights today and book the first one available?
Right, your flight is now reserved!
Great! That's all the help I needed thanks!
Is there anything else that I can do for you?
No that's all, bye!
Thank you and goodbye.