You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I render you today?

USER: I am Barbara Miller. I need to cancel my recent reservation due to cancel of my brother's daughter engagement.

ASSISTANT: Ok.

USER: Can you help me?

ASSISTANT: Sure, I will help you. Please, wait a moment.

USER: Sure.

ASSISTANT: Thank you for waiting. I could not find any reservation on your name.

USER: No problem. Thank you.

ASSISTANT: Thank you for availing us.