You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am Virginia Green. Due to my health problem I want to cancel my reservation, can you please help to cancel my reservation?

ASSISTANT: Sure, please wait a moment.

USER: Ok.

ASSISTANT: Sorry to inform, no reservation found with your name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thanks for reaching us.