You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am trying to cancel my recent reservation but I am unable to cancel it. Can you please help me with that?

ASSISTANT: Sure, may I know your good name please?

USER: Charles Young is my name.

ASSISTANT: Ok. Sorry, but there is no reservation found under your name.

USER: Ok, then no problem. Please leave it. Anyhow thanks for the information.

ASSISTANT: Sure. Thank you.