Hi, I am Frank Martinez.
Hello, how may I help you?
 I want to book a flight to San Francisco with price under 500. Can you help me with it?
Sure, I am here to help you. May I know your travelling dates please?
My travel dates are 08/26 and 08/28.
Ok, please help me with your journey codes for further process.
Journey codes are ORD-SFO.
Ok, please stand by.
Ok.
Thank you for waiting, sorry no flights found with your details.
Ok, no issues.
Thank you for reaching us, have a nice day.