Hello.
Hello. How can I aid you?
I am William Martin. I need to modify my reservation, can you help me out please?
Sure, I am happy to help you. Let  me check your reservation status in our database.
Ok, take your own time.
Martin, I did not find any reservation under your name in our database.
That's ok, no problem. Thank you for your information.
You are welcome and thank you for choosing us.