Hello.
Hello. How can I aid you today?
My name is William Clark, can you help me to change the reservation which I had done last month?
Sure, I am here to help you.
Ok, thank you.
Hold on for a moment. Let me check.
Ok, please take your time.
Sorry William Clark, there are no flights reserved on your given name formerly.
'That is ok, thank you for assisting me.
Welcome, thank you for choosing us. Have a great day.