I like to book a flight from Chicago to San Francisco 
On what day do you want the plane to arrive?
the 20th and flight id 370
May I have your name, please?
Alina
Right, your flight is now reserved!
awesome I am seeing my niece graduate
I am sorry, I don't quite understand what you mean. I am only able to help you reserve a flight.
What is the weather in San Francisco for the 20th ?
Monday?
yes 
It will be Snowing all day on Monday in San Francisco, with temperatures of around 22 degrees celsius.
That stinks can you check if there is a flight for the 22nd instead?
I am sorry, I don't quite understand what you mean. I am only able to help you search for flights.
can you check the 22nd?
Unfortunately there are no flights that match your search. Would you like to change any of your criteria?
23rd or 24th
Right, I found a Business flight with Virgin for 343 credits
 that takes 8 hours to get to San Francisco.
book it 
Book
thank you and goodbye
Thank you and goodbye!