You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

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

ASSISTANT: Yes, I can help you. Can you share me your name for checking?

USER: Thank you. Sure, my name is Nicholas Wilson.

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

USER: Ok, not an issue.

ASSISTANT: Thank you for reaching us.

USER: Anyways, thank you for your service.