Hello, I am looking for a flight from San Fran to Detroit
On what day do you want the plane to arrive?
Thursday
On which date are you want to plane to arrive?
The 4th
Unfortunately there are no flights that match your search. Would you like to change any of your criteria?
I am so glad the weather is warming up aren't you?
Is there anything else that I can do for you?
Can you tell me the weather in Detroit?
For what day would you like the weather forecast?
Today
It will be Partly Cloudy all day on Sunday in Detroit, with temperatures of around -5 degrees celsius.
Okay, how about in New York?
It will be Snowing all day on Sunday in New York City, with temperatures of around 12 degrees celsius.
Okay, Well then can you book me a flight? ID 859?
May I have your name, please?
Its Susan
Sorry, but the flight with id '859' is not available any more.
Can you check one more time?
Sorry, but the flight with id '859' is not available any more.
Okay thank you, 
Thank you and goodbye.