You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Please cancel my recent reservation due to some health issues?

ASSISTANT: Sure, may I know name for the cancellation process?

USER: Sure, I am Edward Campbell.

ASSISTANT: Sorry as per your concern I can not cancel your reservation, as your reservation is not found as per our records.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Welcome, thank you for reaching us.