Hello. I am Melissa Wilson.
user
Hello. How may I help you?
assistant
I want to change my existing reservation, can you please help me with this?
user
Sure, wait for a minute.
assistant
Ok, take your time.
user
Sorry to say that, no reservation found on your name in our database.
assistant
Ok, no problem. Thank you for your information.
user
Thank you for approaching us.
assistant