You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to cancel my flight reservation as I am unwell. Please help me out.

ASSISTANT: Sure, may I know your name please?

USER: Thank you. My name is Rachel Miller.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, there was no reservation found with your given name.

USER: No problem, thank you for checking.

ASSISTANT: Thank you for opting us.