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, we are glad to help you. Please let me know your good name.
assistant
Samantha Campbell here.
user
Sorry, there is no active reservation on your name in our records.
assistant
Thank you.
user
Thank you for choosing us.
assistant