You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I address you?

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

ASSISTANT: Sure, may I know your name to check your reservation from our database?

USER: Sure, my name is Edward White.

ASSISTANT: We regret to inform you that there is no active reservation found on your name to cancel.

USER: Ok, no problem. Anyways, thank you for your service.

ASSISTANT: Thank you for contacting us.