You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. In which way I can aid you at this moment?

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

ASSISTANT: Sure, I will help you with that. May I know your name for further process?

USER: Myself Katherine Edwards.

ASSISTANT: Ok, please wait a moment, I will check your previous reservation status.

USER: Sure.

ASSISTANT: There is no previous reservation found under your name.

USER: No problem, thanks for checking.

ASSISTANT: Thank you for reaching us, have a good day.