You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Myself Christine Wright. I want to change my existing reservation, can you help me?

ASSISTANT: Sure, please wait.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry Christine, there is no active reservation found with your name in our records.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for approaching us.