You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: My name is Nicole Roberts.

ASSISTANT: Yes, Nicole.

USER: Due to health problem, I want to cancel my reservation.

ASSISTANT: Sure, please wait a moment.

USER: Ok.

ASSISTANT: Sorry to say you that, no reservation found.

USER: Ok, thank you for helping me.

ASSISTANT: Thank you for connecting with us.