Hello.
Hello, how may I assist you?
I would like to change my existing reservation, which is done recently. Can you please help me out?
Sure, I am here to help you with that, can I know your good name to proceed further?
Thank you for considering my request. Myself Susan Thomas.
Thank you very much. Please wait for a while, let me check your reservation status in our database.
Sure, I will wait for your response.
 I am very sorry to inform you that there is no reservation found under your name in our database.
Not an issue, anyway thank you for the information.
Thank you very much for approaching our agency.