You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I need to cancel my recent reservation due to cancel of my brother's daughter engagement. Can you help me?

ASSISTANT: Sure, I will help you out. Please provide me your respected name.

USER: I am Sarah Hill.

ASSISTANT: Sorry Hill, no reservation found on your name.

USER: No problem, Thank you.

ASSISTANT: Thank you for reaching us.