Hi, I'm Ben.
Hello, how can I help?
I am needing to book a flight. I'm suppose to be going to my sister's wedding.
Where are you departing from?
Would you search for a flight from San Francisco to Chicago? 
On what day do you want the plane to arrive?
I would like to arrive on Thursday if possible. I don't really like the guy she's seeing but I have to go.
can i get a specific date?
26th please. By any chance could you check the weather for Chicago, I hope it's not raining.
It will be Snowing all day on Sunday in Chicago, with temperatures of around 21 degrees celsius.
Oh no, well I guess I should pack warm. If it's no trouble, please check the weather for San Francisco on Thursday.
It will be Raining all day on Thursday in San Francisco, with temperatures of around 5 degrees celsius.
Thank you. Were you able to find a flight? I don't want anything before 12pm.
Unfortunately there are no flights that match your search. Would you like to change any of your criteria?
Is there a flight available on Wednesday the 25th? I have to get to Chicago before Friday.
Right, I found an Economy flight with American for 371 credits
 that takes 2 hours to get to Chicago.
I would like to book this flight. If you need my id it is, 841
Right, your flight is now reserved!
Thank you have a good day!
Thank you and goodbye.