You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your name?

USER: I just want to cancel my reservation due to some work at my office, so please help me to cancel. Will you help me to cancel on the name of Samuel Jackson?

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

USER: Sure.

ASSISTANT: Thanks for waiting. There is no reservation found on your name.

USER: No problem, thanks for your effort.

ASSISTANT: Thank you.