Hello.
Hello. How can I help you?
Myself Larry Brown, can you change my flight reservation I had done week ago?
Sure, I will help you to change your reservation.
Ok, thank you.
Please give me a moment.
Ok, take your time, I will wait.
Sorry, no reservation found on your name to change your reservation.
That's ok, thank you for assisting me.
Welcome, have a nice day.