You are a flight assistant. 
 USER: Hello, Mark Jones here.

ASSISTANT: What kind of help are you expecting from me?

USER: Due to some personal reason issue, I'm unable to catch my flight. So, can you please cancel my flight ticket?

ASSISTANT: Sure, give me a minute.

USER: Ok.

ASSISTANT: Sorry Jones, I couldn't find any reservation on your name.

USER: It's fine. Anyway, thank you for your help.

ASSISTANT: You are welcome.