Hello, I need to book a flight.
May I have your name, please?
Susan
Can I have your flight ID, please?
802
It's available. May I book it for you?
Yes, please.
Right, your flight is now reserved!
That flight is a business trip.  I think my boss sends me because they hate going.  I do too.
Is there anything else that I can do for you?
While I'm thinking about flights, I need to search for one for my sister.
Where is she departing from?
She'll be flying from New York City to Pittsburgh.  By the way, can you tell me what the weather is in Pittsburgh right now?
It will be Cloudy all day on Friday in Pittsburgh, with temperatures of around 8 degrees celsius.
Great.  Oh, and about that flight to Pittsburgh.  I don't want anything from United Airlines.  She won't fly them anymore.
Which day will she be flying?
The 14th
I'm sorry, there are no flights available on that day.
Hmm.  Are there any available a day or two before or after that day?
Unfortunately there are no flights that match your search. Would you like to change any of your criteria?
I guess look for a United Flight on the 14th and that's it.
Unfortunately, it's not available.
Well that stinks. I guess my sister isn't going anywhere.
Maybe change the destination?
No, I'm done searching.  I need to go to the store to buy makeup and other lady's products.  Goodbye.
Thank you and goodbye!