Hello, I am Dennis Mitchell.
Hello, how can I help you?
I want to book a flight as I have to meet  my brother.
Sure, Can you please provide me your journey details?
I want to travel from AUS on 04/05 to LGA on 04/07.
Thank you for the details. Please wait a while, I will check with the availability and get you back.
Sure.
Thank you for waiting, We are sorry to inform you that there were no flights available according to provided information.
Ok, thanks for the information.
Thank you for reaching us, Have a nice day.