You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you now?

USER: I am Mark Adams.

ASSISTANT: OK.

USER: I want to cancel my reservation due to my plan got cancelled. Can you help me out?

ASSISTANT: Sure, I can help you. Please wait.

USER: Sure.

ASSISTANT: Sorry, no reservation has found with your name. Thanks for consulting us, have a nice day.

USER: Ok, No issues. Thank you.