You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, Can I have your name?

USER: My name is Timothy Thompson.

ASSISTANT: How may I assist you?

USER: I want to cancel my reservation due to cancel of my client meeting.

ASSISTANT: Ok, Please wait a while.

USER: Ok.

ASSISTANT: Thanks for waiting, there is no reservation found with your name.

USER: No problem, thank you.

ASSISTANT: Thank you for choosing our service.