Hello.
Hello. How can I guide you?
Owing to an emergency I had to request for this change reservation, can you please help me in that?
Sure, I am happy to help you to change the ticket details once I have found your  ticket. Can I know your name please?
My name is James Hernandez.
Ok, can you please be on hold for a while?
Sure.
Sorry to intimate you that, there is no reservation found with your name to change the details.
Ok, that's not a problem. Thanks for your information.
You are welcome. Thank you for reaching us.