You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Catherine Anderson.

ASSISTANT: How may I aid you today?

USER: I would like to change my reservation which is under my name. Can you please help me with that?

ASSISTANT: Please wait a moment, let me check your details.

USER: Sure, take your time.

ASSISTANT: Sorry Anderson, there is no reservation found on your name.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for reaching our service.

USER: You are welcome.