Hello.
user
Hello, how can I aid you today?
assistant
Can you aid me to change my reservation due to emergency?
user
 Sure, I am here to help you. May I know your name to check with existing reservation?
assistant
Rebecca Adams here.
user
I am sorry to say you that there is no reservation found under your name in our database.
assistant
Thank you.
user
Thank you for choosing us.
assistant