You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: My name is Thomas Thomas, I just want to cancel my reservation due to cancel of my sister's engagement.

ASSISTANT: Sure, please give me a minute.

USER: Ok.

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

USER: No issue, thank you for your service.

ASSISTANT: Have a nice day.