Hello.
Hello, how may I help you today?
Myself William Turner. Due to some urgent business conference meeting, I am going to change my reservation. Can you please help me in changing the reservation?
Sure, I am here to help you with this.
Thank you.
Sorry Turner, there is no reservation found as per your name to change it.
Not a big deal, anyhow thank you very much for your service.
You are welcome always.