Hello.
Hello. How can I assist you now?
Owing to an emergency, I need to change my reservation, can you please help me with that?
Sure, I will help you with that. Can I have your  good name please to check your reservation status?
Thank you and my name is Steven Lopez.
Ok,  please wait a moment.
Sure.
Sorry to inform you that no reservation has found under your name to change.
Ok, not an issue.
Thank you for choosing  us, have a good day.
Thank you.
Most welcome.