You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please help me to change my reservation, which was reserved to New York?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Can I have your name to proceed further?

USER: My name is Pamela Anderson.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thank you for your valuable time, unfortunately no reservation found with your name in our database.

USER: Ok, thank you for notifying me.

ASSISTANT: Thank you for availing us.