Hello.
How can I provide assistance to you?
I would like to change my flight reservation as my trip got postponed, can you please help me?
Sure, I am here to help you with that, can I know your good name to proceed further?
I am Charles Walker.
Please wait.
Sure, take your time.
 I am very sorry to inform you that there is no reservation found under your name in our database.
Ok, not an issue.
Thank you for choosing us.