You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I serve you today?

USER: Anthony Martin here. I want to cancel my recent reservation which I have done, due to health issue. Can you please help me out?

ASSISTANT: Sure, I'll help you in cancellation. Please wait a moment I will check the reservation list.

USER: Ok, sure.

ASSISTANT: Thank you for waiting, unfortunately there is no reservation found by this name.

USER: Ok, not a problem. Anyways, thank you.

ASSISTANT: Thank you for approaching us.