You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I would like to change my reservation due to some health issues, can you please help me with that?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: Myself Amy Wright.

ASSISTANT: Sorry to inform you that there is no active reservation on your given name.

USER: Ok, no problem. Anyway thank you for checking out.

ASSISTANT: Thank you for contacting us.