You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am David Wilson.

ASSISTANT: How may I aid you?

USER: I want to cancel my recent reservation as my board meeting has been cancelled.

ASSISTANT: Ok.

USER: Can you help me out?

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

USER: Sure.

ASSISTANT: Thanks for waiting, no reservation was found on your name.

USER: Ok, No issues. Thanks for the information.

ASSISTANT: Thank you.