Hi.
Hello, How can I help you today?
 I am Eric Lewis. I want to visit my parents at New York. Can you book a ticket for me?
Sure, can you provide your full journey details please?
My journey details are from SFO to LGA. My preferable dates are from 11/19 to 11/21.
Ok, please wait for a moment, I will check and let you know.
Sure.
Sorry to say this, there are no flights available for your journey.
Ok, thank you.
Thank you for approaching us.