Hello.
Hello, How may I render you today?
I am Charles Baker.
Ok.
I need to change my existing reservation could you please help me with that.
Sure, I will help you with that. Please wait a moment.
Ok.
Thank you for waiting. I have checked in reservation list to change your ticket, but could not find any reservation with your name.
Ok, no problem. Thank you for the information.
Thank you for reaching us.