You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I am Margaret Taylor. I need to cancel my reservation due to some personal issues.So can you help me with cancellation of my reservation?

ASSISTANT: Sure, please wait for a minute.

USER: Sure.

ASSISTANT: I could not find any reservation with your name in our database.

USER: No problem, thanks for your information.

ASSISTANT: My pleasure.