Hello.
Hello, how may I assist you?
 I am Jeffery Lopez want to change my reservation owing an emergency. Can you please help me in changing?
Sure, we are here to help you.
Thank you.
Please wait a moment, I will check your details and let you know the status.
Ok.
Thank you for waiting, sorry to inform you that there is no active reservation found on your name.
Ok, no issues. Thank you for your response.
Thank you for consulting us.