You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Catherine Allen.

ASSISTANT: How can I aid you?

USER: Please help me with changing the recent reservation.

ASSISTANT: Sure, I will help you. Please wait a minute.

USER: Ok.

ASSISTANT: Thanks for waiting. There is no active reservation on your name.

USER: No problem, thanks for the help.

ASSISTANT: Thank you.