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 out?

ASSISTANT: Sure, may I know your name please?

USER: Sure, my name is Samuel Brown.

ASSISTANT: Ok, please wait for a while.

USER: Sure, I will wait.

ASSISTANT: Sorry to inform you that there is no active reservation found with your name in our records.

USER: Ok, not an issue. Anyways, thank you for your service.

ASSISTANT: Most welcome.