You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Margaret King.

ASSISTANT: How may I assist you?

USER: Can you please assist me cancelling my reservation as my meeting got cancelled?

ASSISTANT: Ok, please allow me to check with availability.

USER: Ok.

ASSISTANT: Margaret King, sorry to say. There is no reservation found by your name.

USER: Ok, no problem.

ASSISTANT: Thank you for approaching us.

USER: Thank you.