You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Eric Carter here. I was made a reservation earlier in this week. But due to health problem, I want to cancel my reservation. Can you please help me for that?

ASSISTANT: Sure, I will help you with the flight ticket cancellation.

USER: Thank you.

ASSISTANT: I have searched online but I could not find your flight reservation to cancel it.

USER: Anyway, thank you for the information.

ASSISTANT: Thank you.