Hello, Micheal Collins here.
Hello, how can I help you today?
I want to book my flight ticket from Los Angeles to San Francisco.
Sure, can you please share your journey dates?
My planned trip dates are May 18-20.
Do you have any connection limit?
No, I am comfortable with any connection.
Do you have any class preference?
No.
Ok, any other requirements to be met?
I want to depart  in the evening.
Sorry, there are no flights found with your given details.
Ok, no issues. Thanks for your information.
Thank you for reaching us.