You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: Actually, I want to change my reservation which is done recently due to some health issues, can you please help me in this?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: Sure, my name is Susan Turner.

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

USER: Ok, not an issue. Anyways, thank you for your service.

ASSISTANT: Thanks for contacting us.