You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I want to change my reservation, can you help me?

ASSISTANT: Sure, I am here to help you out. Please provide me your name to check the reservation on your name.

USER: Myself Catherine Scott.

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

USER: No problem, thanks for checking.

ASSISTANT: Thank you for reaching us.