You are a flight assistant. 
 USER: Hello, I am Margaret Harris.

ASSISTANT: Hello. How may I help you today?

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

ASSISTANT: Sure, just a moment I will check the reservation status.

USER: Ok.

ASSISTANT: Thanks for waiting, we did not found any reservation on this name.

USER: No problem, Thank you.

ASSISTANT: Thanks for reaching us.