You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Nicole King.

ASSISTANT: How can I assist you at this moment?

USER: In my previous reservation I want to change my destination code, could you please help me out?

ASSISTANT: Sure, I will help you with this.

USER: Ok.

ASSISTANT: Nicole King, there is no active reservation found with your name in our database to do any modification.

USER: It's ok, thank you.

ASSISTANT: Thank you for contacting us.