Hello.
Hello, how may I help you?
 Due to sudden change in my trip to another location, I would like to change my reservation. Can you please help me out?
Sure, I am here to help you. Can I know your name?
My name is James Harris.
Please wait for a moment to check your details.
Sure, I will wait for your information.
Thank you for waiting, no reservation found on your name.
That's ok, no issue. Anyway thank you for checking.
Thank you for reaching us.