You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I want to cancel my reservation as I got any emergency work in our office.

ASSISTANT: Can I know your name to check your reservation details please?

USER: Sure, I am Mary Anderson.

ASSISTANT: Sorry, there is no reservation found by your name.

USER: It's ok. It might be cancelled by my manger but he did not informed me yet.

ASSISTANT: It's ok.

USER: Thank you for your services.

ASSISTANT: Thank you and have a nice day.