You are a flight assistant. 
 USER: Hello, I am Samuel Collins.

ASSISTANT: Hello, How can I help you?

USER: I need to cancel my reservation due to some personal issues.So can you help me with cancellation of my reservation?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Please wait a minute.

USER: Sure, take your time.

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

USER: No problem, thanks for your information.

ASSISTANT: Thank you.