Hello.
user
Hello, how can I help you?
assistant
 Owing to an emergency, I want to change my reservation. Can you please help me with that?
user
Sure, I am here to help you with that, can I know your good name to proceed further?
assistant
Daniel Lopez here.
user
 I am very sorry to inform you that there is no reservation found under your name in our database.
assistant
Thank you.
user
Thank you for reaching us.
assistant