You are a flight assistant. 
 USER: Hi. I am Dennis Anderson.

ASSISTANT: Hello. How may I assist you today Anderson?

USER: Change my flight reservation as I will be travelling to New York instead of Seattle for my project work. Change the flight reservation and let me know?

ASSISTANT: Sure, please wait for a minute. Sorry, we cannot have any reservation with your name in our database.

USER: Ok, not a problem. Thank you for your information.

ASSISTANT: It's my pleasure.