Hello.
Hello, how may I assist you today?
I want to attend a Marriage in LAS. Can you please help me for booking the flight ticket from OAK?
Sure, can I know your good name please?
My name is Susan Thompson.
 When you are willing to travel?
My travelling dates are Apr 22 and Apr 24.
 Would you let us know if you have any other preferences?
I want to depart in evening.
Sorry to say that, there are no flights available on the routes of your journey.
Anyway, thanks for the information.
Thank you for opting us.