Hi, I need to find a flight. My brother is getting married in a couple of days.
May I have your name, please?
It's John.
Where are you departing from?
Detroit, the wedding is in San Francisco.
On what day do you want the plane to arrive?
Wednesday the 17th
Unfortunately there are no flights that match your search. Would you like to change any of your criteria?
Let's try Thursday please
Right, I found a First flight with Delta for 176 credits
 that takes 2 hours to get to San Francisco.
Oh yes that's perfect. Here is my id 817. Let's book it!
I'm sorry, but your reservation request was unsuccessful.
Oh no, is there a way we could try again/
Right, your flight is now reserved!
Awesome. Would you be able to check the weather too? I want to know what to wear to the airport.
It will be Sunny all day on Sunday in San Francisco, with temperatures of around 20 degrees celsius.
Alright. I actually really like my brother's fiance, she's really nice!
Is there anything else that I can do for you?
No that is all. 
Thank you and goodbye.