You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I assist you today?

USER: I want to cancel my reservation ticket due to sudden demise of great grandfather. Can you help me in cancellation?

ASSISTANT: Just hold on a minute, I will check and get back to you.

USER: Ok.

ASSISTANT: Unfortunately, we did not find any reservation on your given name.

USER: Not a problem, thank you.

ASSISTANT: May I know your name please?

USER: I am Mark Edwards.

ASSISTANT: Thank you for availing us.