Hello. I need to fly from Chicago to San Francisco. Flight id 251.
On what day do you want the plane to arrive?
Monday
May I have your name, please?
John
The flight is available. Should I reserve it for you?
Yes pleae. Can you tell me what the weather will be like when I arrive? I want to do some walking around. I've never been there.
It will be Snowing all day on Monday in San Francisco, with temperatures of around 22 degrees celsius.
That's crazy! I guess I'll stay in my hotel room. Did you book the flight?
Right, your flight is now reserved!
Great! Are you a robot or a human?
I am your assistant. 
Wow. Good answer. Can you tell me the weather in L.A. on Wednesday? I'm going there next.
It will be Partly Cloudy all day on Wednesday in Los Angeles, with temperatures of around 14 degrees celsius.
Better than San Francisco - no surprise there. Never heard of snow in SF.
Is there anything else that I can do for you?
What's the weather in San Diego on Thursday?
I am sorry, I don't quite understand what you mean. I am only able to tell you the weather.
I guess we're done. Thanks for your help. Bye
Thank you and goodbye.